A gradient frosting system, comprising a light processing mechanism arranged in a direction of a primary optical axis of a light beam; a frosting mechanism perpendicular to the primary optical axis of the light beam; and a power mechanism for outputting power to drive the frosting mechanism to move; wherein the frosting mechanism comprises two frosting components including a left frosting component and a right frosting component, the left frosting component and the right frosting component are driven by the power mechanism to move towards or away from each other and are arranged on the power mechanism, wherein the left and right frosting components are arranged up and down at an interval in height in the direction of the primary optical axis, when the left and right frosting components are driven to move towards each other and the two frosting components have their upper and lower edges to be in a same plane parallel to the primary optical axis, the left and right frosting components are in a closed state; and when the two frosting components are further driven to move forward towards each other, the two frosting components are in an overlapping state, resulting in an open-close-overlap motion in a plane perpendicular to the primary optical axis, thus generating a gradient frosting effect which is from no frosting effect to having frosting effect, and from shallow to deep; and wherein the light processing mechanism comprises a light source component, a focusing component, a magnifying lens component and a fixed lens component, which are sequentially arranged in the direction of the primary optical axis of the light beam, the frosting mechanism is arranged between the focusing component and the fixed lens component, and the magnifying lens component is arranged between the frosting mechanism and the power mechanism and forms a frosting module with the frosting mechanism. a light processing mechanism arranged in a direction of a primary optical axis of a light beam; a frosting mechanism perpendicular to the primary optical axis of the light beam; and a power mechanism for outputting power to drive the frosting mechanism to move; wherein the frosting mechanism comprises two frosting components including a left frosting component and a right frosting component, the left frosting component and the right frosting component are driven by the power mechanism to move towards or away from each other and are arranged on the power mechanism, wherein the left and right frosting components are arranged up and down at an interval in height in the direction of the primary optical axis, when the left and right frosting components are driven to move towards each other and the two frosting components have their upper and lower edges to be in a same plane parallel to the primary optical axis, the left and right frosting components are in a closed state; and when the two frosting components are further driven to move forward towards each other, the two frosting components are in an overlapping state, resulting in an open-close-overlap motion in a plane perpendicular to the primary optical axis, thus generating a gradient frosting effect which is from no frosting effect to having frosting effect, and from shallow to deep; and wherein the light processing mechanism comprises a light source component, a focusing component, a magnifying lens component and a fixed lens component, which are sequentially arranged in the direction of the primary optical axis of the light beam, the frosting mechanism is arranged between the focusing component and the fixed lens component, and the magnifying lens component is arranged between the frosting mechanism and the power mechanism and forms a frosting module with the frosting mechanism.