Atomic frequency standard temperature compensating system and atomic frequency standard

The utility model discloses an atomic frequency standard temperature compensating system and an atomic frequency standard, which belong to the atomic frequency standard field. The system comprises a temperature acquisition module, a temperature compensating module and a voltage-controlled transformation module. The temperature acquisition module is respectively electrically connected with the temperature compensating module and a voltage-controlled crystal oscillator. The voltage-controlled transformation module is respectively electrically connected with the temperature compensating module, the voltage-controlled crystal oscillator and the servo circuit of the atomic frequency standard. By converting the difference between the working environment temperature of the voltage-controlled crystal oscillator during a working process and a reference working temperature into a voltage and making the voltage compensated to a rectifying signal to acquire a voltage-controlled voltage, and further making the voltage-controlled voltage acted on the voltage-controlled crystal oscillator, the system thus alleviates the influence of the working environment temperature on the output frequency of the voltage-controlled crystal oscillator and makes the frequency (i.e. output frequency of the atomic frequency standard) output by the voltage-controlled crystal oscillator more stable and accurate.