The invention provides a flywheel, a clutch and a flywheel clutch assembling body. The flywheel clutch assembling body comprises a flywheel having an annular end surface surrounding an axis of the flywheel, the clutch having a driven disc, a clutch cover and a gland between the driven disc and the clutch cover, wherein the annular end surface is provided with a plurality of installation grooves alternatively arrayed in a circumferential direction and on the external edge area; the clutch cover comprises a cover body, a plurality of fixing legs fixedly connected to the peripheral edge of the cover body and inwardly extending in a radial way; the plurality of fixing legs are circumferential arrayed at intervals and fixed in teh installation grooves; and a projection of the driven disc on the annular end surface in an axial way is at least overlapped with the external edge area. By the use of the flywheel clutch assembling body, problems of small torque and heat capacity of a present clutch are overcome.