The invention discloses a multipurpose structural board pre-embedded water seal type leakproof and stinking-proof hydrops processor that is installed in an indoor or an outdoor piping shaft, and the processor can prevent stinking in a double way, and the formed water seal depth>=50mm. The technical scheme is that a multipurpose structural board pre-embedded water seal type leakproof and stinking-proof hydrops processor is provided; a housing has a structure that a superior surface and a side surface are opened casing; the opening side surface of the housing has a drainpipe port; the drainpipe port is connected to the side surface opening of the housing correspondingly; the upper opening of the housing has a cyclic cover plate; the ring inside the cover plate has at least one port; a drain pan is installed on the port at the topmost port of the cover plate in a coupling way; the drain pan has several scuppers; a water seal is vertically arranged in a core space of the housing; the housing, the water seal and the drainpipe port are cooperated to form water sealing; and the water seal is filled with sealing materials. The processor can be applied in the hydrops processing field in the filling layer of a draining system.