The evaluation of urban water ecosystem service value is an important part of urban ecological survey. Taking Kaifeng City as the research object, the willingness to pay for urban water ecosystem services was evaluated based on the double-boundary dichotomy of contingent valuation method. Then we constructed a logistic model including environmental perception variables to explore the influencing factors of willingness to pay. The results showed that: ①73.17% of the respondents had positive willingness to pay for the ecosystem services of Kaifeng urban waters, and the rate of willingness to pay was high. Among them, the payment rate of men was higher than that of women, and the higher the education level was, the higher the payment rate was. The payment rate of local people living near the water area was higher than that of foreign tourists, and the past donation experience can improve the payment rate. ②Distinguishing the zero payment samples, the average willingness to pay was 59.77 yuan per household per month after retaining the authenticity of zero payment samples was calculated. ③Gender, family monthly income and ecological behavior of the respondents had significant impact on their willingness to pay. We suggested to strengthen environmental protection education, build a platform for the public to participate in urban ecological construction, improve public ecological behavior. It is beneficial to increase the value of urban water ecosystem services. This study enriches the assessment cases of urban water ecosystem service value, and can provide scientific reference for government departments to guide the public to participate in urban ecological construction reasonably.