Low orbit satellite data transmission method

The invention discloses low orbit satellite data transmission methods, comprising: Step 1: terrestrial user terminals predict transit time according to ephemeris, sends location information to low orbit satellite sending and receiving end；Step 2: low orbit satellite receives location information by broad beam, uplink/downlink antenna is directed toward user terminal, ephemeris and status information are sent to user terminal.Step 3: terrestrial user terminals receive ephemeris and status information, user's decision sends assignment instructions information.Step 4: low orbit satellite transmitting-receiving process system receives task, and task is executed, as requested issuing service data.Step 5: terrestrial user terminals receive business datum and carry out parsing and fast view to data.Mode through the invention can be improved the efficiency of satellite data transmission, reduce cost.