The invention relates to a production device of chemically strengthened glass. The production device comprises: a support, wherein a sliding rail is arranged at the upper end of the support; a salt tank, wherein the salt tank is arranged below the sliding rail, the salt tank is further provided with a salt tank cover and a compressed air connecting port, the salt tank cover can cover the upper endof the salt tank and is used for sealing the salt tank, the compressed air connecting port is formed at the side surface of the salt tank and is used for blowing compressed air into a salt solution in the salt tank, and the salt solution is used for chemically strengthening glass; and a plurality of preheating boxes arranged on the sliding rail, wherein each preheating box is provided with a hanging basket, a lifting mechanism and a driving mechanism, the driving mechanism is arranged on the preheating box and used for driving the preheating box to slide along the sliding rail, the hanging basket is used for storing the glass, the lifting mechanism is arranged on the preheating box and connected with the hanging basket, and when the lifting mechanism drives the hanging basket to ascend, the hanging basket can be driven by the lifting mechanism to enter the preheating box. The device maximizes the exchange efficiency of the salt solution, achieves continuous production, and greatly improves the efficiency.