Abstract: Simulation of space heat flux with heater strips attached directly to the satellite skin is a technique simulating space heat flux absorped by satellite with electrical heat generated by heater strips, which were attached directly to the satellite skin in advance and in test electrical current pass through which.Using this simulate method, heat flux can adjust simply, the changes in thermal input may be simulated. It would not shield thermally satellite and not interfere thermal simulation of adjacent surface. So that, it may simulate exact heat flux distribution and earth's shadow.Design. fabrication and attach of beater strips area very important things. To obtain better test precition, must select correct attached position and space dimension of heater strip.Emittance of satellite surface would be simulated in rest. When simulate transient condition, thermal capacity would be simulated.