The bus-booking service has attracted over 500,000 subscribers and offers more than 700 routes following tests in Beijing and Shenzhen in July, Xinhua news agency reported.
Didi Chuxing, formerly known as Didi Kuaidi, already provides taxi-hailing, chauffeur and ride-sharing services.
Currently, the service charges on a pay-as-you go basis at a price of around seven to 13 yuan ($ one to two) per ride, which is three to five times the price of public buses.
Didi Chuxing dominates China’s online taxi-hailing market. The commuter shuttle is the latest addition to its transportation offerings, providing an alternative to public buses and subways.
The company plans to bring the bus-booking service to more Chinese cities and invest more to launch new routes.