One is the public square. Generally, it is a political square, which should have a large-scale venue for mass gatherings, processions and festivals, and is usually located in the city center, connected by main roads to facilitate traffic concentration and evacuation. Its scale and layout depend on the nature of the city, the number of people attending the assembly and procession, the distribution of traffic and people flow and the requirements of architectural art, such as Tiananmen Square in Beijing.

The second is the distribution square. The square in front of various buildings for a large number of vehicles and people to pass through is generally an important transportation hub of the city, and the traffic distribution should be reasonably organized in the planning. In the design, according to the characteristics of different squares, traffic and people flow smoothly and safely. The distribution square in front of the station includes the square set in front of the airport, station and wharf. In the design, it should be uniformly arranged according to the characteristics of traffic flow and people flow in the square in front of the station, so as to minimize the interference between people and vehicles. For example, the entrance and exit of the station building should be arranged together with the subway station, bus station, taxi station, parking lot, etc., so as to reduce the intersection of main people and traffic. When traffic and people are very crowded, tunnels or overpasses can be built so that passengers can directly reach the platform of public transport facilities from the station building without interference from other traffic. For example, the entrance and exit of the railway station can be interchanged with underground subway stations and bus stations, which can reduce passengers carrying heavy objects up and down many times, shorten the interchange distance and reduce the intersection between people and vehicles. In addition to the station building and the above transportation facilities, the building in the square in front of the station should also be equipped with necessary service facilities, such as parking lots, post offices, restaurants, department stores and hotels. , and make proper arrangements for greening. The square in front of the station (port) is the gateway for tourists to enter the city. Convenient transportation, thoughtful service facilities and coordinated architectural forms will make people feel good about this city. The square in front of large public buildings such as stadiums, exhibition halls, parks, theaters, restaurants and hotels. It also belongs to the distribution square, which should ensure smooth traffic and pedestrian safety. The layout of the square should match the main building and be properly afforested. Arrange parking lots for motor vehicles and bicycles according to actual needs.

The third is the traffic square. A big intersection where several main roads meet. The common form is around the island, and the central island is decorated with greenery or monuments to enhance the urban landscape. For example, there are six roads in Changchun People's Square, and the central island is 220 meters in diameter. The bridgehead square formed at the intersection of the bridgehead of the urban river-crossing bridge and Binhe Road is another form of traffic square. When the elevation of bridge head is much higher than that of Binhe Road, interchange can be made according to traffic needs.

The fourth is Memorial Square. Buildings with great commemorative significance, such as statues, monuments and memorial halls. Beautify their front yards or around them for the masses to pay tribute to, commemorate or carry out traditional education, such as Nanjing Sun Yat-sen Mausoleum Square. When designing, the main building should be combined with outstanding terrain, coordinated proportion and solemnity. St Peter's Square in Rome is a famous memorial square.

The fifth is the commercial plaza. For commercial activities, it is generally located in the bustling business district. Commercial buildings are mainly arranged around the square, and service facilities such as theaters can also be arranged; Commercial squares are sometimes combined with pedestrian streets. The market and trade square in the town also belongs to the commercial square.

The sixth is the leisure square. It is a square for citizens' daily leisure activities, mainly providing places for leisure, entertainment, fitness, dancing and communication.