The utility model relates to an image space telecentric direct-writing project imaging lens for quasi-molecular laser micro processing, which belongs to the technical field of laser micro processing and application thereof. An object field and an image space field are in shrink proportion. Within the scope of the object field, except the main light on a shaft, all main light is incident into a projection object surface in a certain angle; and within the scope of the image space field, all main light is vertically incident into an imaging image surface. The structure is divided into two parts: a first part comprises a molten quartz lens and the lens adopts a biconvex lens structure. A second part comprises four molten quartz lenses, a first lens adopts the biconvex lens structure, a second lens adopts a left-concave and right-convex lens structure, a third lens adopts the biconvex lens structure, and a fourth lens adopts a left-convex and right-concave lens structure. The image space telecentric direct-writing project imaging lens for quasi-molecular laser micro processing effectively improves the problem caused by a conventional direct-writing projection imaging lens for the quasi-molecular laser micro processing that in the processing of a work piece to be processed, graphics on a lower surface to be processed deviate to the outer side of an optical axis relative to an upper surface to be processed.