The invention discloses a concrete cylinder inflatable formwork and a use method thereof. The concrete cylinder inflatable formwork comprises a main air bag, reinforcing belts, a positioning steel cylinder and a base. The base is detachably sleeved with the main air bag, the steel cylinder is arranged in the main air bag, and the main air bag is sleeved with the reinforcing belts. According to the concrete cylinder inflatable formwork, the main air bag becomes a building formwork capable of being rapidly erected and stripped in inflation and deflation modes, compared with a traditional steel formwork, the manufacturing cost of the formwork is low, the dead weight is low, fewer materials are consumed, formwork erection and stripping are rapid, and construction is easy and convenient. Compared with wood plywood and bamboo plywood formworks, the concrete cylinder inflatable formwork has the advantages that integrity is good, the repeated utilization rate is high, the constitute materials are environmentally friendly, fewer workers are needed, and the construction working face is small.