The invention discloses a rotary type photo-thermal power station heat absorber and a uniform heat absorption control method. The heat absorber comprises a cavity assembly, a cool medium collecting box assembly, a hot medium collecting box assembly and a driving device. The driving device is connected with the cavity assembly and used for driving the cavity assembly to make rotary movement in the circumferential direction relative to the cool medium collecting box assembly and the hot medium collecting box assembly to enable the cavity assembly to uniformly absorb solar radiation heat energy. According to the rotary type photo-thermal power station heat absorber and the uniform heat absorption control method, the cavity assembly is arranged to be of a rotatable structure, so that radiation heat received by all components of the cavity assembly is more uniform, and the thermal stress ultralimit problem of an existing heat absorber is solved accordingly.