A compelling-type centrifugal clutch device with C-shaped joint structure, in which a C-shaped joint structure assembly (100), which can be bended for displacement, is installed between an active rotary part (101) and a passive rotary part (201) of a centrifugal clutch device with a radial arrangement device and is driven by the active rotary part (101). A joint axial core of C-shaped joint structure (113) is also provided for connecting an active arm of C-shaped joint structure (111) and a centrifugal compelling arm of C-shaped joint structure (112) having a centrifugal force actuation clutch device (119) at one distal end, and a recovery spring (114) is installed between the mentioned two arms, so that an inward-bending prestressed force is formed between the two arms for performing the angular displacement through bending at difference angles.