diff --git a/pixelle_video/utils/template_util.py b/pixelle_video/utils/template_util.py
index 372bf55..fdbf22c 100644
--- a/pixelle_video/utils/template_util.py
+++ b/pixelle_video/utils/template_util.py
@@ -4,7 +4,8 @@ Template utility functions for size parsing and template management
 
 import os
 from pathlib import Path
-from typing import List, Tuple, Optional
+from typing import List, Tuple, Optional, Literal
+from pydantic import BaseModel, Field
 
 
 def parse_template_size(template_path: str) -> Tuple[int, int]:
@@ -154,6 +155,113 @@ def get_template_full_path(size: str, template_name: str) -> str:
     return str(template_path)
 
 
+class TemplateDisplayInfo(BaseModel):
+    """Template display information for UI layer"""
+    
+    name: str = Field(..., description="Template name without extension")
+    size: str = Field(..., description="Size string like '1080x1920'")
+    width: int = Field(..., description="Width in pixels")
+    height: int = Field(..., description="Height in pixels")
+    orientation: Literal['portrait', 'landscape', 'square'] = Field(
+        ..., 
+        description="Video orientation"
+    )
+    is_standard: bool = Field(
+        ..., 
+        description="True only for standard sizes: 1080x1920, 1920x1080, 1080x1080"
+    )
+
+
+class TemplateInfo(BaseModel):
+    """Complete template information with path and display info"""
+    
+    template_path: str = Field(..., description="Full template path like '1080x1920/default.html'")
+    display_info: TemplateDisplayInfo = Field(..., description="Display information")
+
+
+def format_template_display_info(template_name: str, size: str) -> TemplateDisplayInfo:
+    """
+    Format template display information for UI
+    
+    Returns structured data for UI layer to handle display and i18n.
+    
+    Args:
+        template_name: Template filename like "default.html"
+        size: Size string like "1080x1920"
+    
+    Returns:
+        TemplateDisplayInfo object with name, size, dimensions, orientation, and standard flag
+    
+    Examples:
+        >>> info = format_template_display_info("default.html", "1080x1920")
+        >>> info.name
+        'default'
+        >>> info.is_standard
+        True
+        
+        >>> info = format_template_display_info("custom.html", "1080x1921")
+        >>> info.orientation
+        'portrait'
+        >>> info.is_standard
+        False
+    """
+    # Keep full template name with .html extension
+    name = template_name
+    
+    # Parse size
+    width, height = map(int, size.split('x'))
+    
+    # Detect orientation
+    if height > width:
+        orientation = 'portrait'
+    elif width > height:
+        orientation = 'landscape'
+    else:
+        orientation = 'square'
+    
+    # Check if it's a standard size (only these three)
+    is_standard = (width, height) in [(1080, 1920), (1920, 1080), (1080, 1080)]
+    
+    return TemplateDisplayInfo(
+        name=name,
+        size=size,
+        width=width,
+        height=height,
+        orientation=orientation,
+        is_standard=is_standard
+    )
+
+
+def get_all_templates_with_info() -> List[TemplateInfo]:
+    """
+    Get all templates with their display information
+    
+    Returns:
+        List of TemplateInfo objects
+    
+    Example:
+        >>> templates = get_all_templates_with_info()
+        >>> for t in templates:
+        ...     print(f"{t.display_info.name} - {t.display_info.orientation}")
+        ...     print(f"  Path: {t.template_path}")
+        ...     print(f"  Standard: {t.display_info.is_standard}")
+    """
+    result = []
+    sizes = list_available_sizes()
+    
+    for size in sizes:
+        templates = list_templates_for_size(size)
+        for template in templates:
+            display_info = format_template_display_info(template, size)
+            full_path = f"{size}/{template}"
+            result.append(TemplateInfo(
+                template_path=full_path,
+                display_info=display_info
+            ))
+    
+    return result
+
+
 def resolve_template_path(template_input: Optional[str]) -> str:
     """
     Resolve template input to full path with validation
diff --git a/web/app.py b/web/app.py
index acf5eaf..a0ca382 100644
--- a/web/app.py
+++ b/web/app.py
@@ -667,47 +667,52 @@ def main():
                 st.markdown(tr("template.how"))
             
             # Import template utilities
-            from pixelle_video.utils.template_util import list_available_sizes, list_templates_for_size
+            from pixelle_video.utils.template_util import get_all_templates_with_info
             
-            # Step 1: Select video size
-            VIDEO_SIZE_OPTIONS = {
-                "📱 竖屏视频 (1080×1920)": "1080x1920",
-                "🖥 横屏视频 (1920×1080)": "1920x1080",
-                "⬜ 方形视频 (1080×1080)": "1080x1080",
-            }
+            # Get all templates with their info
+            all_templates = get_all_templates_with_info()
             
-            # Filter available sizes (only show sizes that exist)
-            available_sizes = list_available_sizes()
-            available_size_options = {k: v for k, v in VIDEO_SIZE_OPTIONS.items() if v in available_sizes}
-            
-            if not available_size_options:
-                st.error("No template sizes found. Please ensure templates are in correct directory structure.")
+            if not all_templates:
+                st.error("No templates found. Please ensure templates are in templates/ directory with proper structure (e.g., templates/1080x1920/default.html).")
                 st.stop()
             
-            selected_size_label = st.selectbox(
-                tr("template.video_size"),
-                list(available_size_options.keys()),
-                label_visibility="collapsed"
-            )
-            selected_size = available_size_options[selected_size_label]
+            # Build display names with i18n
+            ORIENTATION_I18N = {
+                'portrait': tr('orientation.portrait'),
+                'landscape': tr('orientation.landscape'),
+                'square': tr('orientation.square')
+            }
             
-            # Step 2: Select template for the chosen size
-            template_files = list_templates_for_size(selected_size)
+            display_options = {}
+            for item in all_templates:
+                info = item.display_info
+                name = info.name
+                orientation = ORIENTATION_I18N.get(info.orientation, info.orientation)
+                
+                # Always show dimensions for standardization
+                display_name = f"{name} - {orientation}（{info.width}×{info.height}）"
+                
+                display_options[display_name] = item.template_path
             
-            # Default to default.html if exists, otherwise first option
-            default_template_index = 0
-            if "default.html" in template_files:
-                default_template_index = template_files.index("default.html")
+            # Default to "default" portrait if exists
+            display_names = list(display_options.keys())
+            default_index = 0
+            for idx, name in enumerate(display_names):
+                if "default" in name.lower() and tr('orientation.portrait') in name:
+                    default_index = idx
+                    break
             
-            template_name = st.selectbox(
-                tr("template.style"),
-                template_files if template_files else ["default.html"],
-                index=default_template_index,
-                label_visibility="collapsed"
+            # Single dropdown with formatted names
+            selected_display_name = st.selectbox(
+                tr("template.select"),
+                display_names,
+                index=default_index,
+                label_visibility="collapsed",
+                help=tr("template.select_help")
             )
             
-            # Combine size and template name to get full path
-            frame_template = f"{selected_size}/{template_name}"
+            # Get full template path
+            frame_template = display_options[selected_display_name]
             
             # Template preview expander
             with st.expander(tr("template.preview_title"), expanded=False):
diff --git a/web/i18n/locales/en_US.json b/web/i18n/locales/en_US.json
index 6f505f3..af4c4fd 100644
--- a/web/i18n/locales/en_US.json
+++ b/web/i18n/locales/en_US.json
@@ -66,11 +66,18 @@
     "style.generated_prompt": "Generated prompt: {prompt}",
     
     "template.selector": "Template Selection",
+    "template.select": "Select Template",
+    "template.select_help": "Select template and video size",
     "template.default": "Default",
     "template.modern": "Modern",
     "template.neon": "Neon",
     "template.what": "Controls the visual layout and design style of each frame (title, text, image arrangement)",
     "template.how": "Place .html template files in the templates/ folder for automatic detection. Supports custom CSS styles",
+    "template.size_info": "Template Size",
+    
+    "orientation.portrait": "Portrait",
+    "orientation.landscape": "Landscape",
+    "orientation.square": "Square",
     "template.preview_title": "Preview Template",
     "template.preview_param_title": "Title",
     "template.preview_param_text": "Text",
diff --git a/web/i18n/locales/zh_CN.json b/web/i18n/locales/zh_CN.json
index 4247398..32c97f2 100644
--- a/web/i18n/locales/zh_CN.json
+++ b/web/i18n/locales/zh_CN.json
@@ -66,11 +66,18 @@
     "style.generated_prompt": "生成的提示词：{prompt}",
     
     "template.selector": "模板选择",
+    "template.select": "选择模板",
+    "template.select_help": "选择模板和视频尺寸",
     "template.default": "默认",
     "template.modern": "现代",
     "template.neon": "霓虹",
     "template.what": "控制视频每一帧的视觉布局和设计风格（标题、文本、图片的排版样式）",
     "template.how": "将 .html 模板文件放入 templates/ 文件夹即可自动识别。支持自定义 CSS 样式",
+    "template.size_info": "模板尺寸",
+    
+    "orientation.portrait": "竖屏",
+    "orientation.landscape": "横屏",
+    "orientation.square": "方形",
     "template.preview_title": "预览模板",
     "template.preview_param_title": "标题",
     "template.preview_param_text": "文本",