There is a big gap Of urbanizatiorr rate of China between east, middle and west areas of China, the east areas of China has relatively higher urbanization rate, the west areas of China has relatively lower urbanization rate and the middle areas of China has medium--level urbatlization rate. The urbanization rate of all parts of China is increased a lot since China imple- mented the reform and Opening to outside world policy, but the difference in urbanization rate between different areas is obvious, and the promotion effect Of urbanization of different areas on economic growth is obvious. The contribution of urbanization to economic growth is highest in the west areas of China, is medium--level in middle areas and is lowest in the east areas by comparing the east, middle and west areas of China, which is on the contrary of economic development level. Thus, continually accelerating urbanization in middle and west areas Of China is helpful to narrowing the gap between different areas.