The invention provides a distribution network terminal wireless public network communication test system based on cloud service. The test system comprises a distribution network simulation master station and a service agent module, the service agent module is used for operating on a cloud server; the cloud server is used for being connected with the distribution network terminal through a wirelesspublic network and is used for being connected with the distribution network simulation master station through the Ethernet, the cloud server has a fixed public network IP address, data interaction between the distribution network simulation master station and the distribution network terminal is achieved through the cloud server, and testing of the wireless public network communication service function of the distribution network terminal is achieved.