Abstract: In order to measure input-output efficiency of agricultural mechanization in Hubei province in recent years，data envelopment analysis （DEA）was used，using investment of agricultural machinery，input of agricultural machinery employees，and total power of agricultural machinery in Hubei province in 2001—2016 year as input indicators.Then output and value of crops were as a measure of output.Technology efficiency，pure technology efficiency，scale efficiency of input and output of agricultural mechanization each year were analyzed.Results showed that half of year′s agricultural mechanization input and output was efficient，while half of years were in non-resource allocation efficiency，but actual value was very close to ideal value.Overall，word of agricultural mechanization in Hubei province was completed well and input-output ratio was reasonable.