The invention belongs to the field of air conditioning and provides a temperature control circuit and an air conditioner. In the embodiment of the invention, a compressor control module is connected with a compressor, indoor temperature is collected and the working state of the compressor is controlled, the master control module controls the compressor control module according to the indoor temperature, thus the air conditioner can be automatically started or closed according to the indoor temperature, thus the indoor temperature is adjusted, the manual turning on or off the air conditioner frequently by the user is not needed, and the use experience of the user is improved.