It intends to pay attention to the re-employment needs of the young elderly and explore the feasibility of building a handicraft mass innovation platform for the young elderly from the perspective of TPB (Theory of Planned Behavior) in the paper. By tracing the origin and development of TPB, the concept, connotation and elements of TPB are analyzed. Through the literature review, the research status of TPB, employment and entrepreneurship for the elderly is clarified. Based on the internal correlation among the three and the relevant elements of TPB, a service design model of handicraft mass innovation platform for the young elderly is constructed. The proposed research model can build a universal, open and systematic handicraft crowd-innovation platform for the young elderly, which not only provides a new idea for the establishment of a mass innovation platform for the young elderly in the current application market, but also is an inclusive expansion of TPB in the field of employment and entrepreneurship.