The invention discloses a treatment device for alcohol production waste liquid. The treatment device structurally comprises a convenient and fast waste liquid treatment mechanism, a linking lock, an upper end cover, a built-in lock, a first sealing plate, a second sealing plate and castors. Waste liquid is screened and treated by virtue of mutual cooperation of a screening mechanism and a pulley connecting mechanism, meanwhile, suspended solids in waste clear liquid are further separated by virtue of an optimal stirring mechanism and an optimal cleaning mechanism, finally the waste liquid is settled by virtue of a settling tank and can be utilized after reaching the standard, so that the operation process is simple and convenient, equipment is safe and reliable, and the treatment effect isgood; by starting a motor is to work, a first rotating shaft is driven to rotate, a disc-shaped cam is driven to rotate by virtue of the first rotating shaft, a contact rod is driven to move left andright during the rotation of the disc-shaped cam, a first sliding block is driven to move left and right during the left-right movement of the contact rod, a net plate can be driven to move left andright during the left-right movement of the first sliding block, and the waste liquid can be adequately screened by virtue of the left-right movement of the net plate.