The invention discloses a modularized grenade, belongs to the technical field of military and relates to hand-throwing ammunition. By the use of the modularized grenade, a problem of inadequate power or excessive power of a present grenade can be solved. The modularized grenade comprises a fuse module, a plurality of body modules filled with explosives and a switch arranged on the fuse module. Rear service pressure is greatly reduced and soldier load is reduced and military flexibility is enhanced; the power of the grenade is controlled by soldiers on the front line, so grenade operational effectiveness is improved and grenade operational range and methods are enlarged; and soldier fighting capacity is increased.