The invention provides an isoindigo derivative organic solar cell receptor material and a preparation method thereof. The compound has good heat stability, higher carrier mobility and a higher molar extinction coefficient; organic solar cell devices prepared from the compound have good photoelectric conversion efficiency and a higher fill factor. The structures of isoindigo derivatives are shown in the description, wherein AK is selected from one of a saturated alkyl chain with a carbon atom number of 1-20, an ether chain or a siloxane chain, and X represents H or CF3.