It is hard to quantify the attributes and characteristics of the development of urban distribution network. Therefore this paper provides a comparative analysis of the four morphological attributes of the urban distribution network—the physical form, systemic characteristics, time structure and spatial structure. It establishes an evaluation system for an urban distribution network development that enables the characterization of morphological connotation with classified types. The P-OWA is used to preprocess the initial value of the qualitative index because of the strong subjectivity of evaluation methods. In addition, the arithmetic of obtaining a P value is studied. To obtain a more scientific weight of morphological indicators, the Attribute Hierarchical Model (AHM) and the Criteria Importance Through Intercriteria Correlation (CRITIC) are used to compose subjective and objective weight. Finally, the degree of membership of an index is calculated by the modified cloud matter-element algorithm and then the level of urban distribution network development is obtained. This paper takes four regional urban distribution networks as examples to verify the feasibility of the assessment theory. This work is supported by National Natural Science Foundation of China (No. 5160706).