A skin moisture testing system comprises a PCB, a skin moisture testing system arranged on the PCB and including a Bluetooth MCU, a Bluetooth antenna impedance matching unit, a RC integral and diode rectifier unit, a sinusoidal signal unit, a first contact, a second contact, a first spring arranged around the first contact, a second spring arranged around the second contact, and a case. The case includes a housing, an upper cover, and a connecting cover. The PCB is received in the housing. The first contact and the second contact are integrally fanned with the upper cover, and the connecting cover defines a receiving space for receiving the upper cover.
