The application of single-chip computer makes the design of hardware circuit simple. This design is an automation system of the measurement and control of temperature by a single-chip computer. The first is the foundation of a model. Through reasonable equipment of hardware and appropriate selection of heating model by the design of software, the temperature control is made to meet the demands of different phases of the control model. The collection module of the system uses thermistor PT100 as the element of the temperature measurement, and the control module uses the relay, by which the heating voltage is controlled. The application of single-chip computer makes the design of hardware circuit simple. This design is an automation system of the measurement and control of temperature by a single-chip computer. The first is the foundation of a model. suitable selection of heating model by the design of software, the temperature control is made to meet the demands of different demands of the control model. The collection module of the system uses thermistor PT100 as the element of the temperature measurement, and the control module uses the relay, by which the heating voltage is controlled.