The invention relates to liquid supply equipment for washing machines, in particular to a multifunctional washing machine water circuit system for a washing machine. The washing machine water circuit system comprises a water control element having a water inlet and at least four controllable water outlets arranged in parallel, wherein the water inlet is communicated with a water source; each controllable water outlet is communicated with at least one functional module in the washing machine; the functional modules at least comprise a washing water inlet module for supplying water to the washing drum of the washing machine, a drying water module for supplying drying condensate waster, a cleaning module for washing the observation window and observation window pad of the washing machine, a defoaming module for defoaming and washing the condenser of the washing machine and a circulating water module; and the circulating water module absorbs recycled water and is communicated with the washing drum of the washing machine directly or indirectly so as to supply water to the washing drum. Thus, the invention provides a multi-branch water circuit system of a washing machine and a structurematched with the water circuit system for using recycled water as washing water repeatedly.