diff --git a/.claude/skills/week_report_gen_from_json/generate_report.py b/.claude/skills/week_report_gen_from_json/generate_report.py
index 1c7885b..c0b02ba 100644
--- a/.claude/skills/week_report_gen_from_json/generate_report.py
+++ b/.claude/skills/week_report_gen_from_json/generate_report.py
@@ -240,11 +240,28 @@ def extract_report_data_from_json(json_data, user_manager=None):
                         last_project = node['name']  # Keep updating to get the last project
                         last_project_index = level_index
                 
-                # Apply priority logic
+                # Apply priority logic and extract completion info
+                completion = None
+                work_package_node = None
+                
                 if first_work_package:
                     sub_project_name = first_work_package  # Highest priority: first work_package
+                    # Find the work package node to extract completion
+                    for node in path_to_leaf[1:-1]:
+                        if node['type'] == 'work_package' and node['name'] == first_work_package:
+                            work_package_node = node
+                            break
                 elif last_project:
                     sub_project_name = last_project  # Second priority: last project
+                
+                # Extract completion from work package if available
+                if work_package_node and 'completion' in work_package_node:
+                    completion = work_package_node['completion']
+                
+                # If C column is empty or "-", try to get completion from leaf work package (E column)
+                if (sub_project_name == "-" or not sub_project_name) and leaf_node.get('completion'):
+                    completion = leaf_node['completion']
+                    
                 # Task name (E column) - leaf work package name
                 task_name = leaf_node['name']
                 
@@ -258,7 +275,7 @@ def extract_report_data_from_json(json_data, user_manager=None):
                 report_data.append({
                     '專案名稱': project_name,
                     '子項目名稱': sub_project_name,
-                    '進度': None,  # User should fill this in
+                    '進度': completion,  # Use work package completion if available
                     '本周主要進展': progress_text,
                     '參與人員': participant,
                     '工時': time_entry['hours'],
@@ -301,7 +318,7 @@ def format_for_weekly_report(json_data, user_manager=None):
             grouped_entries[group_key] = {
                 '專案名稱': entry['專案名稱'],
                 '子項目名稱': entry['子項目名稱'],
-                '進度': None,
+                '進度': entry['進度'],  # Use completion from the first entry in the group
                 '本周主要進展': [entry['本周主要進展'].split('\n')[0]],  # Task name
                 '參與人員': entry['參與人員'],
                 '工時': 0,
@@ -311,6 +328,10 @@ def format_for_weekly_report(json_data, user_manager=None):
                 'comments': []
             }
         
+        # Update completion if the current entry has completion info and grouped entry doesn't
+        if entry['進度'] is not None and grouped_entries[group_key]['進度'] is None:
+            grouped_entries[group_key]['進度'] = entry['進度']
+        
         # Aggregate hours
         grouped_entries[group_key]['工時'] += entry['工時']
         
diff --git a/README.md b/README.md
index 8a53727..26044d2 100644
--- a/README.md
+++ b/README.md
@@ -26,12 +26,18 @@ Fetches and displays time entries grouped by work packages for specified date ra
 
 ### 🚀 Week Report Generator from JSON (`week_report_gen_from_json`) 
 
-**New Enhanced Version**: Automatically generates weekly project reports directly from OpenProject API data via JSON format. Features intelligent cell merging, hierarchical project structure recognition, and streamlined workflow.
+**New Enhanced Version**: Automatically generates weekly project reports directly from OpenProject API data via JSON format. Features intelligent cell merging, hierarchical project structure recognition, automatic progress tracking, and streamlined workflow.
+
+**Progress Auto-Fill Logic:**
+- 🔍 **When C column (子項目名稱) contains work_package**: Automatically fills D column (進度) with work package completion percentage
+- 📋 **When C column is empty or "-"**: Automatically fills D column with E column work item completion percentage  
+- ⚙️ **Smart Integration**: Seamlessly integrates with `week_work_package_log` completion tracking system
 
 **Key Advantages:**
 - 🔄 **Direct API Integration**: No manual Excel export required
 - 🎯 **Smart Cell Merging**: Automatic B/C/D column merging for cleaner presentation  
 - 📊 **Hierarchical Structure**: Proper project → sub-project → task organization
+- 📈 **Automatic Progress Tracking**: Auto-fills D column (進度) with work package completion percentages
 - ⚡ **Automated Workflow**: From data fetch to formatted report in one command
 - 🎨 **Professional Layout**: Enhanced visual grouping and formatting