Contact type heating plate of freeze-drying equipment

The utility model discloses a contact type heating plate of freeze-drying equipment, which comprises a heating plate, the heating plate is at least provided with a straight contact surface used for being in contact with a workpiece to be heated, a heating channel for a heating medium to circulate is arranged in the heating plate along the length direction of the heating plate, and the heating channel extends to the end parts of the two ends of the heating plate; end plate channels are formed in the end plates in the length direction of the end plates, one ends of the end plate channels are in a closed state, the other ends of the end plate channels are in an open state, the number of the end plates is two, and the side faces of the two end plates are connected with the two ends of the heating plate correspondingly; the side face of each end plate is provided with a communicating hole communicating with the heating channel and the end plate channel. The heating plate has the characteristics that the heating is