The construction of harmonious communities requires in itself the diversity and uniformity of the work. Nanjing’s construction of communities has been on the top list of the country for many years. In the construction of harmonious communities，Nanjing has not only formed several practical patterns，which has instilled various and rich connotations into the construction，but also created unified standardized system evaluation methods of the construction of harmonious communities，hence providing the reference sample for the whole country in constructing harmonious communities.