The invention discloses a diesel generator set buffer support device. The diesel generator set buffer support device comprises a diesel generator set. A first base is arranged under the diesel generator set, and a buffer part is arranged at the bottom of the first base. A buffer plate is further disposed at the upper end of the buffer part, and the diesel generator set is disposed on the buffer plate. First limiting blocks are separately and fixedly connected with the four inner side walls in the first base, and the first limiting blocks are disposed above the buffer plate. Through the arrangement of supporting columns and supporting feet and rotating chamfers at the supporting feet, supporting and pulley passing can be switched according to requirements, the moving requirement is achieved, and the diesel generator set buffer support device can be fixed to a desired position; and through the arrangement of the buffer part, the impact of a diesel generator on the buffer plate can be dispersed and buffered.