The invention relates to a new type of liquid chlorine vaporizer, which comprises a casing, an interlayer is arranged inside the casing, an insulation pipe is arranged between the casing and the interlayer, a water inlet is arranged at the right end of the casing, and a water inlet is arranged at the left end of the casing. There is a water outlet, the lower end of the casing is provided with a liquid chlorine inlet, the upper end of the casing is provided with a chlorine gas outlet, a hot water pipe and a vaporization pipe are arranged inside the casing, the water inlet is connected to the water outlet through a hot water pipe, and the The hot water pipe is provided with a through hole, the vaporization pipe is arranged in the through hole, the liquid chlorine inlet is connected with the chlorine gas outlet through the vaporization pipe, the lower end of the hot water pipe is connected with the heat preservation pipe, and the heat preservation pipe is provided with There is a filter; in the present invention, the device can be kept warm, which can effectively prevent certain influence on the vaporization of liquid chlorine due to the low temperature in the back section of the vaporization pipeline, can effectively prevent heat loss caused in the heating process, and effectively improve the Production efficiency, saving production costs.