A combined labyrinthine fluid sterilizing apparatus include chamber (1) with inlet and outlet, and exhauster (2) and ultraviolet lamps (5) therein, the lumen of the chamber is divided by many bafflers with pores inserted in the slots on the inside of the front and back side plates, and the pores on the adjacent bafflers are staggered up and down, or left and right, there are mesh plates at the place of pores, where an one-way openable door is assembled on at least one baffler, the top plate and bottom plate of the chamber are openable, there are pore and cover plate covered by escutcheon on the top plate and bottom plate, the exhauster is assembled at the place of pore on the plate, the chamber and the bafflers are coated by TiO2. The bafflers, filter mesh or exhauster and cleaning parts can be added, removed or replaced, the one-way openable door can prevent water from flowing backward, the sterilizing passage is winding, which prolongs sterilizing process and sterilizing time, and makes full use of photocatalysis of TiO2 to decompose organic substance, clean, deodorize, disinfect effectively.
