The invention relates to a full-automatic playing card point division and detection machine. The full-automatic playing card point division and detection machine comprises a rack, a card counting device and an overlap conveying device and is characterized in that a wrong card scrapping device is arranged at the end of a conveying rail in the overlap conveying device, and comprises a transition card conveying device and a turning-over plate, wherein the turning-over plate is driven by a driving structure to be capable of turning over up and down; a waste scrapping bin is arranged below the turning-over plate; the main structural component of the wrong card scrapping device is the turning-over plate, the structure is simpler, the cost is low, and the occupied space is very small; in addition, waste scrapping control can be completed only by controlling turning over or not of the turning-over plate, and the control manner is simpler; the wrong card scrapping device is arranged between the end of the conveying rail in the overlap conveying device and a lifting device, the phenomenon that wrong cards are lifted by the lifting device is avoided, one lifting position of the lifting device is saved, and the point division and detection efficiency of playing cards can be improved. The invention further relates to a playing card point division and detection method which is more reasonable in program control and can improve the point division and detection efficiency.