[Purpose/significance] The elderly has accumulated much valuable knowledge in their life course, such as experience, professional skills, social relations and wisdom, etc. If knowledge can be successfully transferred from the elderly to young people, existing human capital will be accumulated and retained for the next generation and young human capital will be developed. It will be conducive to the transition from the first demographic dividend to the second demographic dividend, and the sustainable development of human society and economy. In order to understand the situation of the elderly intergenerational knowledge transfer intention, we designed a questionnaire. [Method/process] We surveyed 387 elderly people of Jinan City, Shandong Province. After eliminating invalid questionnaires, we finally got 286 valid questionnaires from elderly people over 60 years old. [Result/conclusion]Using multiple linear regression, we found that perceived usefulness of knowledge and the benefits of intergenerational knowledge transfer (IGKT) by the elderly will positively impact their intention of IGKT. Except directly and negatively impacting the intention of IGKT, health will also indirectly and negatively impact the intention of IGKT through the mediation of perceived usefulness of knowledge by the elderly. Online frequency will positively impact the intention of IGKT indirectly through the mediation of perceived benefits of IGKT by the elderly; perceived usefulness of knowledge by young people will positively impact the intention of IGKT indirectly through the mediation of perceived usefulness of knowledge and benefits of IGKT by the elderly. At the end of this paper, the theoretical and practical implications, limitations and the future work are discussed.