Abstract: For fully understanding the utilization of crop land in Yunnan Province, protecting and rationally utilizing the crop land, based on the statistical data from 2003 to 2012, this paper chose multiple crop index to evaluate the intensive utilization of the crop land macroscopically in Yunnan by regional comparison, temporal variation analysis, spatial difference analysis and potential calculation. The results showed that, the multiple crop index of Yunnan was far lower than that of the national average, and it’s also the lowest value in Southwest China, which included Sichuan, Guangxi and Guizhou. In addition, the multiple crop index of all cities (prefectures) in Yunnan showed a rising tendency as a whole, the central area had a high index, the index of the northern area was uneven and the southern area had the lowest index. The research indicated that the southern area of Yunnan had the most abandoning crop land and the greatest potentials of multiple crop index, and should be regarded as the future key area to reform farming system, implement irrigation and drainage engineering and improve efficiency and productivity of crop land.