The invention discloses a central air conditioner cooling circulating water treatment comprehensive control treatment method, and belongs to the field of water treatment of industrial circulating water cooling systems. The method comprises the following steps: analyzing calcium ion concentration, chloride ion concentration, pH value, alkalinity, conductivity and the like in make-up water and circulating cooling water, calculating a saturated pH value through a table look-up method and a graph look-up method, calculating the saturated pH value through a formula of pHs=9.7+A+B-C-D and a formulaof pHs=PCa+PMALK+C, then calculating a stability index through a formula that S=2pHs-pH, calculating the concentration multiple, the evaporation capacity, the water replenishing capacity and the sewage discharge capacity of the cooling circulating water according to the total alkalinity (mg/L) measured value and the like, formulating a comprehensive water treatment table, according to comparison of the calculated stability indexes, and carrying out comprehensive data processing in combination with control indexes such as calcium ions and hardness, so that the reasonable dosing amount and pollution discharge time are determined, blindness of dosing and pollution discharge of conventional central air conditioner water treatment is reduced, the accuracy of the dosing amount and the pollutiondischarge amount is improved, and waste of water treatment agents and water resources is reduced.