An optical module assembly and optical modules

The invention discloses an optical module assembly and relates to the field of optical communication. The optical module assembly is used for reducing optical axis deviation caused by reduction of the draft angle. The optical module assembly is used for coupling light emitted by a laser device into optical fibers and comprises a body element and an insertion element, the body element is provided with a first cavity, the insertion element is placed in the first cavity, a cavity is formed by the body element and the insertion element in a surrounded mode, at least one inner wall, through which the light passes, of the cavity is a draft inclined plane, and the light passes through the draft inclined plane and then rotates to the optical axis by a first deviation angle; the light module assembly is provided with a dimming inclined plane through which the light passes, and the light passes through the dimming inclined plane and then rotates to the optical axis by a second deviation angle; the first deviation angle and the second deviation angle are opposite in rotation direction.