The invention discloses a tower-type solar energy water/steam compound type plate fin hot plate type heat absorber, which consists of a heat absorbing plate and seal heads, wherein the heat absorbing plate is in a double-layer arc-shaped plate structure, the outer layer is provided with a heat absorbing temperature equalizing hot plate, and the inner layer is provided with a plate fin type water/steam channel; the seal heads are positioned at both ends of the water/steam channel in the heat absorbing plate; and the outer-layer radiation absorbing surface of the heat absorber is coated with Pyromark coating used for radiation absorption, and heat loss is reduced. The arc-shaped structure is conductive to the focusing of sunlight on the tower-type heat absorber, the temperature equilibrium is improved, and simultaneously a plurality of heat absorbers are easily connected to constitute an absorbing surface with any size. The heat absorber has the advantages that the warm start performance is good, the heat transfer efficiency is high, the integral temperature distribution of the heat absorber is uniform under a work condition, and the heat absorber has strong creep resistance and fatigue damage resistance, an advanced manufacturing technology, high safety, a long service life and the like.