123 19 is the urban construction service hotline. It is the public service telephone number of the national engineering construction industry defined by the Ministry of Construction and the Ministry of Information Industry. 123 19 is mainly responsible for accepting the damage and lack of municipal facilities such as urban roads, bridges, tunnels, footbridges, drainage networks, underground passages and lighting; Accept the problem of water accumulation in roads, bridges and pedestrian bridges in urban built-up areas; Accepting issues related to the destruction and damage of urban municipal facilities.

For general information, citizens can connect with the hotline center at 123 19 by telephone, fax, internet, etc., and the reception staff of the center can communicate directly with the citizens according to the effective information stored in the center to solve the problem of telephone call handling. For the information that needs to be further implemented, after the hotline center accesses the citizen-related information, combined with the actual situation, and after being processed by the service station, the hotline service network directly transmits this information to the secondary network platform (including the competent department) of the relevant responsible unit and the relevant responsible unit or competent department.

The main business of 123 19 hotline is: 1. The water affairs level includes: report, consultation, opinion and repair of flood control, river embankment, drainage pipeline and water supply system.

2. Transportation includes complaints, consultation, suggestions and maintenance on bus, taxi, rail transit and land management.

3. Real estate includes: construction land, collective land, real estate development, real estate evaluation, real estate surveying and mapping, real estate brokerage, real estate property rights, pre-sale of commercial housing, sale of stock housing, housing rental market, public housing rental management, low-rent housing poverty alleviation, housing maintenance, community management, industry committee work, maintenance fund, etc.