The invention relates to a satellite-borne area array CCD camera point spread function measuring device and method. The device comprises a light source system, a target, a collimating device, an area array CCD camera and an image collecting system; the target is placed on a focus face of the collimating device, the collimating device and the optical axis of the area array CCD camera are coaxially arranged, the target is illuminated by uniform light generated by the light source system to form an image on the focusing face of the CCD camera through the collimating device and the area array CCD camera, the image of the target is formed, and the image collecting system collects and processes imaging results. According to the satellite-borne area array CCD camera point spread function measuring device and method, phase position alignment is considered in target design, an experimental method and data processing, the PSF measurement accuracy can be guaranteed, and the blank in the satellite-borne area array CCD camera PSF testing method is filled.