The present invention relates to the technical field of clothes treatment, and in particular, to an atomizing generator and a clothes treatment apparatus comprising the atomizing generator. It is an object of the present invention to solve the problem of low production efficiency of a clothes treatment apparatus due to low integration level of the existing atomizing generator. To this end, the atomizing generator in the present invention includes a housing provided with an atomizing cavity therein, an atomizing element capable of atomizing a liquid is provided in the atomizing cavity, an air inlet, a liquid inlet, and a mist outlet which are communicated with the atomizing cavity are provided on the housing, and a communicating cavity which is independent of the atomizing cavity is formed in the housing. The atomizing cavity is communicated with the communicating cavity through a first communication hole, the mist outlet is communicated with the communicating cavity through a second communication hole, a valve mechanism is further provided in the communicating cavity, and the valve mechanism is configured to be capable of sealing the first communication hole and/or the second communication hole. The present invention improves the integration level of the atomizing generator, facilitates the assembly and production of the clothes treatment apparatus, and improves the assembly efficiency and the yield.