Control method of cooking utensil, cooking utensil and readable storage medium

The invention provides a control method of a cooking utensil, the cooking utensil and a readable storage medium. The cooking utensil comprises a temperature obtaining device, the temperature obtaining device is used for obtaining the temperature in a cavity of the cooking utensil, and the control method of the cooking utensil comprises the steps that the temperature change rate of the temperature in the cavity within a first set duration is obtained; determining heating duration according to the temperature change rate; and controlling the cooking utensil to operate according to the heating duration. The heating duration required by the cooking utensil can be accurately determined according to the temperature change rate, the content of residual water in the inner cavity after cooking is completed can be accurately controlled in the cooking process, the problems that dry burning of the inner cavity is caused by too long heating duration and excessive residual water in the inner cavity is caused by too short h