The invention discloses a molasses raw material top-grade alcohol distillation and waste liquid concentration thermal coupling device and a process. The molasses raw material top-grade alcohol distillation and waste liquid concentration thermal coupling device comprises a distillation device, a first-stage evaporation concentration device, a second-stage evaporation concentration device and a waste liquid tank, wherein the distillation device comprises a coarse distillation tower, a water scrubbing tower, a fine distillation tower and a methanol tower which are sequentially communicated; the coarse distillation tower is provided with a raw material inlet, and the methanol tower is provided with a finished product outlet; the first-stage evaporation concentration device is communicated between the coarse distillation tower and the water scrubbing tower; the second-stage evaporation concentration device is communicated with the first-stage evaporation concentration device; and the first-stage evaporation concentration device and the second-stage evaporation concentration device are both communicated with the waste liquid tank. The molasses raw material top-grade alcohol distillation and waste liquid concentration thermal coupling device disclosed by the invention can enhance the quality standard of an alcohol product and can reduce the pollution and reduce the steam consumption and water consumption by effectively treating molasses alcohol waste liquid at the same time.