Abstract: According to the requirements of the drag-free control for micro/nano-satellites,LVAT-1 characterized with the impulse bit of less than 1 μN·s and the adjustable thrust of 1~50 μN has been developed.The critical testing during development and the design scheme of PPU and the on-orbit verification results of LVAT-1 were introduced.The telemetry data of satellite acceleration during igniting of LVAT-1 indicated that the impulse bit is in the range of 0.68~0.83 μN·s,and the average impulse bit was 0.74 μN·s,which was satisfied the design requirements of less than 1 μN·s.Finally,the future development suggestions for LAVT-1 are provided.