The invention relates to the technical field of control valves and discloses a thermostatic valve core and a thermostatic faucet. According to the thermostatic valve core provided by the invention, aflow regulating mechanism and a temperature regulating mechanism are arranged, so that the regulation of the flow and the temperature can be realized; a special switch valve core is not required to bearranged in the thermostatic faucet independently, so that the integral structure of the thermostatic faucet is simplified, and the thermostatic faucet is more convenient to use; and in addition, aninner sliding sleeve can grind scales, impurities and the like in the sliding process relative to an outer sliding sleeve, and the scales, the impurities and the like are prevented from being attachedto the inner sliding sleeve and the outer sliding sleeve, so that the phenomena of unsmooth use and blockage are effectively avoided, and the accuracy of temperature regulation and the service life of the thermostatic valve core are improved. The thermostatic faucet provided by the invention has the advantages that the thermostatic valve core is applied, the structure is simple, the use is convenient, the use smoothness and the temperature regulation accuracy can be ensured, and the service life of the thermostatic faucet is prolonged.