Limited by the imaging mechanism, the spatial resolution and temporal resolution of ghost imaging are mutually restricted. If the spatial resolution is higher, more modulation patterns are required, so the longer acquisition time is consumed. Aiming at this bottleneck, a method using multiple low spatial resolution patterns to simultaneously modulate high spatial resolution object is applied, a single-pixel detector is employed to collect the corresponding backscattered signal, and the iterative algorithms and compressed sensing algorithms are employed to construct the high spatial resolution image of the imaging object. The effectiveness of the proposed method is verified by numerical simulations. Itis shown that the high spatial resolution ghost imaging technology implemented here can greatly reduce the number of modulated patterns as well as the online sampling time. Therefore, it is believed that the method has important application value in biomedicine and other fields which require high spatial resolution and less sampling time.