With the development of kilo-Herz (kHz) satellite laser ranging technology, high precision and high frequency data of satellite laser ranging is becoming a foundation for the research of satellite spin. Based on Yunnan Observatories kHz satellite laser ranging system, the AJISAI satellite spin is analyzed. Firstly, the original observation data by the orthogonal least square method are proprocessed, and the data of AJISAI using the method of spectrum analysis are studied. Finally, AJISAI satellite corner reflector panel arrangement is combined, AJISAI satellite spin is analyzed, and the satellite spin mean rate is about 0.4382 Hz. This method can be extended to other laser satellite spin determination. At the same time, this method provides a basic condition for building a high precision satellite spin model.