The invention belongs to the technical field of steel and iron metallurgy, and in particular, relates to a rotating drum cooling bed for recovering rolled steel heat. The bed comprises an outer hollow cylinder (1) fixedly arranged, and an inner hollow cylinder (2) sleeved by the outer hollow cylinder (1) and connected with a rotating shaft (5); multiple netty steel plates (14) are symmetrically fixed on an outer curved surface of the inner hollow cylinder (2); multiple cold air inlets (3) are formed in the lower part of a cylinder body of the outer hollow cylinder (1) in the cylinder body direction; multiple hot air outlets (6) are formed in the upper part of the cylinder body of the outer hollow cylinder (1) in the cylinder body direction; and a steel feed transverse channel (7) and a steel discharge transverse channel (8) are separately formed in the two sides of the hot air outlets (6) at the upper part of the cylinder body of the outer hollow cylinder (1). The bed adopts the convection heat transfer forced cooling, is relatively high in cooling efficiency, and can densely stack and cool steel materials, and the floor area of the cooling bed can be reduced.