The invention provides an injection molding automatic quality testing production line for plastic products. The injection molding automatic quality testing production line comprises an operation tableand a containing box fixed to the left side of the top of the operation table. According to the injection molding automatic quality testing production line for the plastic products, a feeding assembly is arranged and cooperates with the containing box, to-be-detected plastic plates are automatically fed and detected, a detection box can remove plastic plates with unqualified quality for the firstround, and automatic removal is gradually achieved through removal; a sliding way is used in cooperation to automatically convey unqualified plastic plates into a first collection box; meanwhile, pushing strips arranged at equal distance cooperate with a second trigger switch to control the fee speed, so that the feed speed is more stable, and the detection rate is increased; meanwhile, the plastic plates are detected again through an electronic scale; and in the detection process, manual operation is simple, detection quality is improved through two times of detection, the automation degreeis high, the detection rate is high, meanwhile, the structure is simple, cost is low, and use is convenient.