With the ability of long-distance transmission and strong penetration，LoRa wireless transmission is used in the lighting systems of tunnels. However, there are no dedicated equipments for the ID configuration and function test of LoRa wireless network facilities. The conventional manual method of configuration and testing is not only time-consuming and labor-intensive, but also it causes high error rate. To address the problem a automatic function test system for LoRa wireless tunnel lighting network devices is studied and designed. It uses INSPEC configuration software as the development platform. And it can automatically complete function test and torture running for as many as 15 LoRa wireless network equipments at one time. It has the functions of inputting system process parameters, real-time acquainting, calculating and processing of test parameters, storaging, displaying, viewing report form, fault self-diagnosis and alarm etc. The circuit design of the test system is given. The flow charts of function modules of the test system and the design methods and implementation principles of the key programs are described in detail. The application result of nearly 10,000 sets of LoRa wireless tunnel lighting network equipment used by a company in Hunan verifies the correctness and high performance of the test system.