Abstract: Ecological efficiency is an important index to measure the level of economic development,the efficiency of reducing pressure on the environment and utilization of natural resources in economic development.In view of the Heilongjiang province land,wo construct the evaluation index of land use ecological efficiency.And land use ecological efficiency of coal-power base in Heilongjiang province in 1990,2000,2005,2010,2011 is calculated by data envelopment analysis(DEA)model of CCR-I.The results showed that,the land use ecological efficiency of the base in on the rise,but there is differences among cities and their changes is different.Urban size and type effect the ecological efficiency.That of the large cities and medium cities is significantly lower than the small cities.That of the coal cities is lower than the non-coal cities.There are 4～7cities whose ecological efficiency of DEA are effective in 1990,1995,2000,2005,2010.The cities are more efficient and the efficient cities is mostly distruted in the eastern border area of Heilongjiang province