Abstract: As for the moon exploration，the different science and engneering instruments are effective means.The applied moon tiny dust measuring system relates to accurate measuring part made up of vacuum grease film coated crystal oscillation circuits working under the vacuum environment.The relative oscillation circuits analysis，include several sections such as the circuit equivalent model，analysis，discussion，calculation，etc.A good agreement about the theories and experiment results have been reached，that indicates the validity of the theory model，which will benefit the designing and performance improving to space dust measuring systems.