The invention discloses a projection control method and a micro electro mechanical system projection device. The projection control method is used to control a micro electro mechanical system scanning lens so as to help an image beam to perform repeated scanning motion on a plane to form a projection picture. The projection control method comprises the following steps: the resonance frequency of the micro electro mechanical system scanning lens when the micro electro mechanical system scanning lens swings by taking a first pendulum shaft as the axis is detected; the resonance frequency is provided for a filtering unit so as to be used as a filtering processing parameter; a first periodic control signal which has a first frequency and has a plurality of harmonic components is generated; the harmonic component in the first periodic control signal having the resonance frequency is filtered by the filtering unit; and the filtered first periodic control signal is provided for the micro electro mechanical system scanning lens to control the micro electro mechanical system scanning lens to swing according to the first frequency and taking the first pendulum shaft as the axis so as to make the image beam scan back and forth in a first direction in the plane. Moreover, a micro electro mechanical system projection device is further provided.