A clean-water-washing function control method of a washing machine which includes a recycled water filtration system configured to allow water in the washing tub of the washing machine to flow into the recycled water filtration system during at least one operation stage of the clean-water-washing function of the washing machine and to allow the water to be filtered in the recycled water filtration system and then flow back into the washing tub for reuse, wherein the clean-water-washing function comprises filtering the laundry water discharged from the washing tub of the washing machine and returning the filtered laundry water back to the washing tub for reuse, characterized in that the method comprises: step A: receiving a selection instruction of a laundry process, wherein the selection instruction corresponds to information about the type of clothing; step B: enabling or disabling selection of a clean-water-washing function of the washing machine according to the selection instruction; step C: determining a laundry sub-process according to whether the clean-water-washing function of the washing machine is selected; step D: receiving an execution operating instruction to execute the laundry operation in accordance with the determined laundry sub-process; wherein said step C further comprises: judging whether or not the selection of the clean-water-washing function is enabled, and if the selection of the clean-water-washing function is disabled, or if the selection of the clean-water-washing function is enabled and an instruction for selecting the clean-water-washing function is not received, determining that the laundry sub-process is a first laundry sub-process executed by default; and if the selection of the clean-water-washing function is enabled and an instruction for selecting the clean-water-washing function is received, determining that the laundry sub-process is a second laundry sub-process having the clean-water-washing function, wherein the second laundry sub-process comprises a recycled water rinsing stage for rinsing the clothing in a washing tub of the washing machine with rinsing water, and in the recycled water rinsing step of the recycled water rinsing stage, the rinsing water in the washing tub flows into a recycled water filtration system of the washing machine and flows back into the washing tub after filtration in the recycled water filtration system. step A: receiving a selection instruction of a laundry process, wherein the selection instruction corresponds to information about the type of clothing; step B: enabling or disabling selection of a clean-water-washing function of the washing machine according to the selection instruction; step C: determining a laundry sub-process according to whether the clean-water-washing function of the washing machine is selected; step D: receiving an execution operating instruction to execute the laundry operation in accordance with the determined laundry sub-process; judging whether or not the selection of the clean-water-washing function is enabled, and if the selection of the clean-water-washing function is disabled, or if the selection of the clean-water-washing function is enabled and an instruction for selecting the clean-water-washing function is not received, determining that the laundry sub-process is a first laundry sub-process executed by default; and if the selection of the clean-water-washing function is enabled and an instruction for selecting the clean-water-washing function is received, determining that the laundry sub-process is a second laundry sub-process having the clean-water-washing function, wherein the second laundry sub-process comprises a recycled water rinsing stage for rinsing the clothing in a washing tub of the washing machine with rinsing water, and in the recycled water rinsing step of the recycled water rinsing stage, the rinsing water in the washing tub flows into a recycled water filtration system of the washing machine and flows back into the washing tub after filtration in the recycled water filtration system.