The invention provides a microwave oven heating method and device, a storage medium and a microwave oven, belonging to the field of smart home appliances. The microwave oven heating method and devicesolve the problem that interference factors such as the weight of a container affect heating effect in the prior art. The method comprises the following steps: measuring the total weight of a to-be-heated article; acquiring the estimated weight value of to-be-heated food corresponding to the total weight of the to-be-heated article according to a preset standard weight proportion comparison table;determining target heating time needed for heating the to-be-heated food to a target heating temperature according to the estimated weight value of the to-be-heated article, and carrying out heatingaccording to the target heating time; measuring the temperature of the to-be-heated food after heating for the target heating time; and if a measurement result reaches the target heating temperature,completing heating, or if the measurement result does not reach the target heating temperature, carrying out repeated heating with reference container weight as the total weight of a new to-be-heatedarticle. According to a technical scheme in the invention, the microwave oven heating method is applicable to a microwave oven and realizes automatic precise heating.