The plot ratio of Shanghai Shenyuan Taikang Home is 4.5. According to relevant data, the plot ratio refers to the ratio of the total building volume to the occupied area, which is one of the important indicators to measure the intensive use of urban land. The higher the plot ratio, the higher the building density and the higher the land use efficiency. However, high plot ratio may also lead to traffic and environmental problems, so it is necessary to comprehensively consider various factors in planning and construction according to the actual situation and carry out scientific and reasonable planning and design.