The invention discloses a multipurpose structural board pre-embedded baffle-type odor-resistant hydrops processing system installed indoors. The system has a double odor-resistant effect and the formed water sealing depth is greater than or equal to 50 mm. According to the technical scheme, an indoor standpipe pre-embedded assembly and a hydrops processing assembly are both pre-embedded inside a structural board; the indoor standpipe pre-embedded assembly and the hydrops processing assembly are communicated with each other through a hydrops drainpipe, which is slantly arranged with the slope being greater than or equal to 0.6% enabling hydrops to conveniently flow from the hydrops processing assembly into the indoor standpipe pre-embedded assembly; the upper surface of the structural board is provided with a leveling layer, which is an inclined surface with the slope being greater than or equal to 0.6%; the upper surface of the leveling layer is provided with a waterproof layer enabling hydrops on the waterproof layer to be conveniently discharged into the hydrops processing assembly; the upper end face of the indoor standpipe pre-embedded assembly is higher than the highest point of the waterproof layer; and the upper end face of the hydrops processing assembly is flush with the lowest point of the leveling layer. The system of the invention is applied in the field of hydrops processing of filling layer of a drainage system.