The invention discloses an intelligent water tank of a wire cutting machine and relates to parts of the wire cutting machine. The key point of the technical scheme is as follows: the intelligent watertank comprises a tank body and a return pipe connected to the wire cutting machine, wherein a waste liquid chamber, a cleaning chamber and a transitional chamber communicating one another are formedin the tank body; a filter assembly comprises a filter arranged above the cleaning chamber; a water pump for feeding a working liquid in the transitional chamber into a filter is arranged in the transitional chamber; the liquid outlet of the filter is located above the cleaning chamber; an output pump is arranged in the cleaning chamber; and the output pump is connected to a liquid outlet pipe connected to the wire cutting machine. The working liquid seeping from the filter flows into the cleaning chamber to be stored, the output pump feeds the working liquid in the cleaning chamber into the wire cutting machine, and the output pump can convey the working liquid stably to guarantee a stable output pressure in the liquid outlet pipe. The intelligent water tank solves the technical problem that the pressure in the liquid outlet pipe is unstable.