The main mine fan is an important equipment for the safety in mine parturition.By the periodic performance test,mine fan failure can be found in time so as to eliminate hidden dangers.A variety of discrete instruments are used in the performance testing of mine fan commonly,the testing error is large and the tests are difficult to carry out.Therefore,a kind of comprehensive test instrument for mine fan was developed,which is of many advantages such as high accuracy,easy to carry,and automatic testing.This paper describes the major technological indexes,measuring principle as well as software and hardware of the comprehensive test instrument.