The invention discloses a centrifugal clutch which comprises a driving part, a centrifugal body and a driven part. The driving part is a driving shaft. The driving shaft is sleeved with a clutch sleeve in a key connection mode. The driven part is a belt wheel and is installed outside the clutch sleeve through a bearing. The centrifugal body is composed of a plurality of brake blocks which are arranged between the clutch sleeve and inner holes in the belt wheel. An elastic connection assembly is arranged between each brake block and the clutch sleeve. The brake blocks are tightly attached to the clutch sleeve under the effect of the elastic connection assemblies. The centrifugal force of the brake blocks can overcome constraint of the elastic connection assemblies when being large enough and then drives the belt wheel to rotate. The centrifugal clutch has the advantages of being simple in structure, easy to machine, low in requirement for machining precision, stable and reliable to work and capable of achieving rapid clutch through control over the rotating speed of an engine.