The invention provides a cooker and a preparation method thereof. The cooker comprises a cooker body, a temperature sensor and a data acquisition unit, wherein the cooker body is made of conductive materials, a blind hole with an upper open opening is formed in the cooker body, the temperature sensor is arranged in the blind hole and provided with a lower electrode and an upper electrode, and thelower electrode is electrically connected with the cooker body; the data acquisition unit is electrically connected with the cooker body and the upper electrode. The temperature sensor is arranged inthe cooker body, the temperature sensor generates electrical signals according to temperature changes, the electrical signals are transmitted to the data acquisition unit by exquisitely utilizing thecharacteristic that the cooker body is electrically conductive, the temperature of the surface of the cooker can be more flexibly or accurately measured in real time, cooker surface temperature quantization is achieved after the temperature is processed by the data acquisition unit, then, the requirement for healthy cooking is met, and the cooker is simple in structure, easy to obtain, wide in application prospect and long in service life.