A portable fascia gun designed to solve delayed onset muscle soreness (DOMS). This design investigates and designs from the aspects of deep scientific massage and physiotherapy hot compress. Among them, the modeling adopts reversible design, which can realize the pattern transformation of "one type" and "T type" and can massage in all directions. The bottom hot compress adopts rounded corner modeling to expand the hot compress area and adjust different temperatures through gear switch. Upright modeling and bottom cover better protect the function and hygiene of the hitting head, while enabling the fascia gun to be placed vertically, saves space and is more portable.