Dental X-ray machine high-voltage control circuit and dental X-ray machine

The utility model provides a dental X-ray machine high-voltage control circuit and a dental X-ray machine, and the dental X-ray machine high-voltage control circuit comprises a boost rectification circuit, an inverter circuit, a voltage doubling circuit and a feedback circuit, the boost rectification circuit is used for rectifying and boosting alternating current into first direct current voltage, and the first direct current voltage is output by a first direct current voltage output end; the inverter circuit is used for inverting the first direct-current voltage into a square-wave voltage signal with a certain duty ratio and outputting the square-wave voltage signal, the input end of the voltage doubling circuit is connected with the output end of the inverter circuit, and the voltage doubling circuit is used for performing voltage doubling rectification on the square-wave voltage output by the inverter circuit and then outputting a direct-current high voltage; the feedback circuit is used for sampling the d