The current exsiting studies on city rubbish mainly focus on the following three areas: the environment science area, the management science area and the economy science area. The exploration into the problem of city rubbish from the aspect of city planning theory would shed sight on our better understanding of the issue of city rubbish. In the following study, we will use the classification of city function theory, the basic urban design theory, the region planning theory, as well as some theories in economics and social sciences. The methods used in the study include the disassembling of complex problems, using the system projecting theory,conducting the on-the-spot investigation, and distributing questionnaire. The present study aims to find the effect of the appropriately classified city function on the solving of city rubbish problem, to utilize the rubbish disposing facilities with region planning theory, and appeal people to realize the effect of district space on city rubbish in the progress of urban design. The overall and most important purpose of this study is to decrease the amount of rubbish to be produced, to recycle the rubbish, and make people live more safely and comfortably.