The boom of sharing bicycles brought some problems for Chinese urban management, such as overabundance of sharing bicycles, and disorder of sharing bicycles’ placing, which interferes normal traffic space. In order to solve these problems, this paper analyzed the boom of sharing bicycles in Shenzhen and Hangzhou, and studied Chinese urban spatial function division and urban spatial structure in comparison with that of Japan and America. The results show that Chinese urban spatial function division is planned and designed mainly by government. By comparison with other countries, Chinese urban spatial function points such as parks and hospitals are large-scale, widely spaced and very small in quantity. These distribution characteristics require that people make more spatial movements to satisfy their needs, which may lead to short-term concentration of people and traffic, the increase of traffic volume and even the traffic explosion. The density of Chinese urban built-up areas is much larger than that of Japan and America, while the weight of the land for residence and transportation in urban development land is much lower than that of Japan and America. Therefore, Chinese urban per capita traffic space is scarce, and the occupied space of sharing bicycles makes urban traffic space tighter. To solve the explosion of sharing bicycles, the operators must improve their and technology operation ability, and in urban spatial planning, the weight of residence and transportation land must be enlarged while the scale of single function points such as hospital, shopping mall, and park must be reduced and the quantity must be increased to avoid the concentration of the people with same needs. In addition, the structure of urban land, population, and production and living space should be evenly arranged with timely adjustment and improvement.