A housing apparatus of a rechargeable physiotherapy instrument, that has a shape of a rounded rectangular prism, is disclosed comprising a back plate that has a shape of a rounded rectangular prism without a top plate, and whose one end comprises a first output interface opening, charging interface opening, a second output interface opening, a first baffle plate, a second baffle plate, a first box-like structure, a second box-like structure, a first spring, and a second spring. The first box-like structure further comprises a first wall and a second wall opposite one another. The second box-like structure further comprises a first wall and a second wall opposite one another.