With the increasing concern for the rights and interests of mothers and infants, this paper comprehensively analyzes the satisfaction of using mother and baby rooms in commercial spaces in Dalian based on the fuzzy comprehensive evaluation method. A satisfaction index system containing three dimensions of mother and baby room accessibility, service quality and humanized design was constructed, and the set of factors and the set of rubrics in fuzzy evaluation were determined. Fuzzy statistical method was used to determine the affiliation degree of each indicator, and principal component analysis was applied to assign weights to the indicators. The results of the study showed that the weight of indication clarity was 0.086 and the satisfaction was 3.173. The weight of distribution extensiveness was 0.107 and the satisfaction was 2.538. The area of internal space, the quality of facilities and security were the dominant indicators of high importance and high satisfaction, and distribution extensiveness, openness and the completeness of facilities were the indicators to be focused on improvement. Under the three-level theory, the emotional design at the instinctive level meets the basic needs of the mother and baby groups by enhancing the environmental quality and improving the signage system. Behavioral level affective design reduces the difficulty of use for mother and baby groups by optimizing the flow design and optimizing the convenience of facilities, and improves the satisfaction level Reflective level affective design enriches the experience of use for mother and baby groups by optimizing the interaction experience and strengthening the privacy, and improves the degree of emotional identity.