The invention discloses an injection molding equipment construction synchronization based machined part consumption statistic method. Injection molding equipment comprises an injection molding equipment body and an injection molding mechanical hand matched with the injection molding equipment body. The statistic method comprises the following steps: pre-storing discharge amount of a current batch of injection molding raw materials to be machined by the injection molding equipment; obtaining the weight of each machined part injection-molded by the injection molding equipment in the current batch in real time through a machined part weight obtaining module arranged on the injection molding mechanical hand; accumulatively recording the weight of each machined part obtained in real time in the current batch; and performing operational treatment according to the pre-stored discharge amount of the injection molding raw materials in the current batch and the accumulatively recorded accumulated weight of the machined parts in the current batch to obtain the consumption of the machined parts produced from the injection molding raw materials in the current batch. The invention furthermore discloses an injection molding equipment construction synchronization based machined part consumption statistic system.