Projector keystone correction method, projection device and storage medium

The invention discloses a keystone correction method of a projector, a projection device and a storage medium, and the method comprises the steps: projecting a to-be-projected image to a projection plane to obtain a projection picture, and carrying out the preset projection transformation of the to-be-projected image to obtain a simulation projection image; obtaining a projection picture image obtained by shooting the projection picture through a camera; performing feature point matching on the projection picture image and the simulation projection image to obtain first position information of a first matching point of the projection picture image and second position information of a second matching point of the simulation projection image; wherein the first matching point and the second matching point are matched with each other; calculating a projection transformation relationship between the projection surface and the projector by using the first position information and the second position information; an