Labor NGOs in China has been utilizing various social media tools, such as WeChat for networking workers and promotion. In the year 2017 WeChat Mini Program was released, allowing developers to create “sub-application” within WeChat. This research evolves from a laws-searching WeChat Mini Program development project, which will adopt a design science approach, follow the design science research methodology (DSRM) process model, and measure the effect of the WeChat Mini Program with the concepts from information systems success model and post-adoption behaviors. We propose that the law-searching WeChat Mini Program can sever labor NGOs in terms of legal service and promotion.