This paper discusses the concept of the alternative service and the influence of the service in the study of the application of alternative services in the field of mental rehabilitation. The relationship between alternative services and professional services is not exactly the same as that between the traditional helper and the recipient, nor is it fully embodied as a professional support. In this sense, it is of great significance for the mental rehabilitation of the community, which has formed a kind of mutual support with professional service, promoting the subjectivity and the quality of life. Therefore, to improve the subjectivity of the parties concerned, alternative services should be established in reference to the necessity and possible path of the alternative service in the rehabilitation of local communities in China.