Large aperture long focal length lens is one of the necessary optics in the high power laser device.Along with the device upgrading, it proposes detailed transmission wavefront including transmission peak valley (PV)、 transmission root mean square gradient (GRMS) for long focal length lens. According to the long focal length characteristic, this paper put forward an interference detection method, which utilizes a collimatied lens and a compensative lens to shorten the optical path length of the long focal lens detection and compensate the theoretical sphere aberration. Zemax is utilized to analyze and optimize the theoretical error and the distance adjustment error of the detection method.This method significantly shorten the optical path length of the long focal lens detection from 13 m (or 33 m) to about 5 m. The results show the transmission wavefront aberration of the tested lens.