The invention discloses dry-type winnowing building rubbish light plastic substance removing equipment. The dry-type winnowing building rubbish light plastic substance removing equipment comprises a feeding hopper, a machine box, a shifting roller, a screen cloth and a conveying belt. A display screen is arranged in the middle of the front end face of the machine box. The feeding hopper is arranged on the right side of the upper end face of the machine box. A discharging outlet B is formed in the lower portion of the left side face of the machine box, and a discharging outlet A is formed in the lower portion of the right side face of the machine box. A draught fan box is arranged on the upper left portion of the inner side of the machine box. An air suction bin is arranged below the machine box position where the draught fan box is located. The conveying belt is arranged on the right side of a tilted discharging plate. An air feeding barrel is arranged above the conveying belt. A draught fan A is fixed to the right side of the air feeding barrel. The shifting roller is arranged above the left side of the air feeding barrel. A shifting sheet is transversely fixed to the side face ofthe shifting roller. A vibration plate is arranged on the right side of the shifting roller. Due to the fact that the dry-type winnowing building rubbish light plastic substance removing equipment isprovided with the feeding hopper, the machine box, the shifting roller, the screen cloth and the conveying belt, the problem that building rubbish light plastics cannot be treated in a classified mode and thus the environment can be polluted is solved.