Phytosociology is the study of the characteristics, classification, relationships, and distribution of plant communities. A phytosociological system is a system for classifying these communities. In the present study six sites of Mumbai district were selected for phytosociological studies of plant communities during year 2016-17. At each site, the frequency percentage, frequency class, density and abundance was estimated by using Quadrat method. The data of all the six sites of Mumbai district showed that the plant community was more towards heterogenosity.