Based on big data, this paper analyzes the intelligent analysis framework applied in the comprehensive evaluation of water environment quality. It is believed that the water environment quality evaluation standard is actually an interval concept rather than a point concept. Therefore, the traditional intelligent analysis framework treats the evaluation standard as an ideal point. There are certain flaws. In order to overcome this shortcoming, a multi-objective decision-ideal interval method (MODMIIM) is proposed. Compared with the PP model and neural network method, MODMIIM is simple and effective; compared with the intelligent analysis framework, it has greater applicability and increased by 7.6%. MODMIIM can be widely used in comprehensive evaluation of various environmental quality.