Optical module with self-sinking unlocking and housing structure thereof

A housing structure of an optical module with self-sinking unlocking comprises: a base, an upper cover, a rotating lug, a support rod and a pull ring; wherein the rotating lug comprises a first connecting piece a lug, a second connecting piece and a stem, wherein the first connecting piece and the second connecting piece are respectively horizontally disposed at two ends of the stem, and the lug is disposed on the stem; and the pull ring comprises a fixing shaft, a rotating shaft and a side rod; wherein the second connecting piece of the rotating lug is disposed on the bas; the first connecting piece of the rotating lug is coupled to a right connecting piece of the support rod; a left hole of the support rod is coupled to the rotating shaft of the pull ring.