The invention relates to the field of household electrical appliances, and discloses a heating method and a heating device. The heating method comprises the steps: heating a to-be-heated object; if hot points cover a preset percentage of the area occupied by the to-be-heated object, determining the frequency and the phase of a current heating source as a heating frequency and a heating phase, wherein the temperature difference among the hot points is within a preset range; and controlling the heating source to heat the to-be-heated object at the heating frequency and the heating phase so that a uniform heating purpose is achieved. In this way, the performance of the heating device is improved, and the user experience is improved.