Under the background of new urbanization and industry-city integration (I-C Integ. for short), this paper concerns about the rising phenomenon of large residential area and innovation industry, and suggests that the key of I-C Integ. is co-development of urban service industry with the two formers. Then, this paper reviews the concept of Urban Complex and its relationship with I-C Integ., and considers those two as one unified form by different scales of entire city and city-area. Furthermore, this paper put forward several types of Urban Complex basing on I-C Integ., and points out that area-industry will dominate the development of Urban Complex in the future.