To a non-profit organization, volunteer is a very important human capital. If volunteer of non-profit organization can be well organized, it could benefit from doing this. The purpose of this research is to study on the relationship between organization identification and job involvement for non-profit organization volunteer. This research finds that the organization identification and the job involvement have positive relationship. The better organization identification for volunteer, more job involvement will involve in the organization. In addition, the level of job involvement of volunteer is higher than enterprise employee. Therefore, if the level of organization identification of the individual is enhanced, job involvement will also be enhanced.