On September 15, 2011, the Tianjin Seed Management Station organized experts to identify the japonica rice photo temperature sensitive genic male sterile line L39S developed by Tianjin Tianlong Seed Industry Technology Co., Ltd. The attending experts inspected the experimental site and listened to the technical report of the research group. The sterile line has completed all breeding procedures, and the experimental data is reliable and the information is complete. Stable sterility, high outcrossing rate, strong restorability, and high combining ability. Experts present unanimously agreed to pass the identification.