With the rapid development of satellite internet, the shortage of bandwidth and spectrum resources has become increasingly prominent.Satellite laser communication has the characteristics of large bandwidth and no spectrum constraints, which makes it an effective means to alleviate the shortage of radio frequency resources and improve the communication bandwidth.Through the investigation of the development of satellite laser communication at home and abroad, this paper summarizes the future technical development trend in this field.The key technologies such as network reconstruction and efficient coding are studied via simulation, which provide theoretical and technical reference for the research of satellite laser communication in China.