The invention belongs to the technical field of filtering state indicators, and discloses a method for monitoring the service life of a
filter element of a water purifier. The method specifically comprises the following steps: presetting related
water quality parameters; detecting the
water quality by using a
water quality monitor; monitoring the TDS value change of the water; metering the use time of the
filter element by using a
timer; monitoring the filtering water quantity of the
filter element by using a flow meter; calculating and analyzing a water quality comprehensive
score; outputtingthe grade of the water quality and the comprehensive
score of the filter element; and displaying the water quality detection value, the TDS value, the filter element
service time, the filtering flowinformation, the water quality grade and the filter element
score by using display equipment. Multiple data such as the water quality detection value, the TDS value, the filter element
service time, filtering flow and the like are integrated, the water purification effect is comprehensively calculated and analyzed, so the technical problem of inaccurate detection caused by a single index in the prior art is solved, effective monitoring of the service life of the filter element can be guaranteed, the measurement result is accurate, comprehensive and effective, and the
water use safety is improved.