The invention relates to a key billet sorting and ordering system. An image recognition device is installed on the upper portion of a conveying device; a CCD industrial video camera in the image recognition device shoots and recognizes key billet parts on a groove conveying belt of the conveying device and transmits shot image information into a touch control integrated machine in real time; the touch control integrated machine judges whether the upper surfaces of the key billet parts are specified surfaces or not and transfers the recognized result to a PLC; if the upper surfaces of the key billet parts are the specified surfaces, the PLC outputs a control signal to a separation ordering device, a single-rod air cylinder in the separation ordering device drives a separation pushing pieceto complete separation of the key billet parts, the key billet parts enter an ordering mechanism of the separation ordering device, and thus ordering of key billets is completed; and if the upper surfaces of the key billet parts are non-specified surfaces, the single-rod air cylinder does not make motion, the key billet parts continue to enter an ordering mechanism of a turnover ordering device along with the groove conveying belt of the conveying device, and thus ordering of the other surfaces of the key billets is completed.