When the liquid floating gyroscope is in a dry state, it is necessary to test the zero return characteristics of the float, the friction characteristics between the float and other parts, and the torque characteristics of the balance spring wire; The traditional use of standard instruments for manual testing has problems such as low efficiency and poor consistency of test results, which seriously affect product development and production; To address the above issues, it is proposed to use computer control technology and torque feedback control to achieve automatic dry state testing of liquid floating gyroscopes; The testing computer controls the excitation module and acquisition module within the testing system, running software algorithms to achieve closed-loop control; The experiment shows that the automatic testing system can shorten the float stabilization time from more than 10 seconds to within 2 seconds, and the float zeroing time converges from uncertainty to within 30 seconds, greatly improving the testing efficiency;At the same time, the computer executes the testing process and timing stably and reliably, and the consistency of the test data is good; The testing system can help to improve the product performance and research and production efficiency of liquid floating gyroscopes in China.