The invention discloses a detachable type combined pigsty. The pigsty is a ventilated fence type combined structure, and comprises a pigsty roof and a pigsty main body, wherein the pigsty main body is used for supporting the pigsty roof through a top beam of a truss structure, and comprises detachably connected fences, bottom beams of the pigsty and a pigsty floor, and the pigsty floor is supported by the bottom beams of the pigsty. According to the invention, as a detachable and ventilated fence type combined pigsty is adopted, an optimum ventilation effect is achieved, so that the accumulation of dirty gases is avoided, and infectious pig diseases caused by the problem on circulation are avoided; therefore, the detachable type combined pigsty is favorable for the prevention and treatment of diseases, breeding cost is reduced, and pig breeding benefit is increased; as a detachable structure is adopted, the detachable type combined pigsty is movable; the whole pigsty is convenient to disassemble and transport in case of relocation, so that recycling value of materials is improved, small destruction to the original land for the pigsty, particularly no damage on farmland, is realized, and therefore the problem on the large-area destruction to the farmland of the conventional pigsty in the prior art is solved, use cost and construction cost are saved, and a better environmental protection property is realized.