The invention discloses a forming quality monitoring method. The forming quality monitoring method comprises the steps that after forming scanning work is started, during the time frame after scanning forming of a layer is completed and before forming powder for the next layer is laid, a photo in an area of a forming platform is taken through a video camera arranged above the forming platform; information of a current layer of a formed part in the photo is compared with a corresponding slice layer in a numerical control model of the formed part; and the matching degree is calculated, if the matching degree is within the allowable range of errors, scanning forming work is implemented continuously, and otherwise, additive manufacturing equipment stops working. The invention further discloses the additive manufacturing equipment adopted in the method. By means of the forming quality monitoring method and the additive manufacturing equipment, forming quality can be monitored in real time so that operators can know the forming quality condition at any moment and find problems in time; and the problems that due to the fact that the forming process and forming quality cannot monitored in real time, forming quality is poor, and part forming fails are weakened and even eliminated.