The invention provides a packing machine. The packing machine comprises a feeding mechanism, a first conveying part, a cutting mechanism, a second conveying part and a packing mechanism; the cutting mechanism is arranged an output end of the first conveying part, and the feeding mechanism is arranged at an opposite end of the output end; a cutter is arranged between the first conveying part and the cutting mechanism; the cutting mechanism is connected with the second conveying part; and the packing mechanism is arranged at the front end of the second conveying part. The packing machine is simple in whole structure, high in yield of molded roll papers and fast in packing efficiency.