For UAV system only using the secondary data without the control of node data, the automatic image splicing and quickly correcting method is proposed based on the UAV image blocking of pseudo center point secondary data to realize the fast image splicing and correcting handling. SIFT algorithm is adopted for high accurate and high efficient automatic splicing; the pseudo center point of the secondary data is analyzed to correct the blocking images. Experimental results show that secondary data with pseudo center point combining with SIFT algorithm for processing not only avoids the occurrence of image visual identity but has a high correcting accuracy.