Research related to aged society has received more attention in universities in Taiwan. Professors from various disciplines raise research issues from different perspectives. We use “elderly”, “older adults”, “old age” as keywords to search in the titles of research projects approved by the Ministry of Science and Technology, Taiwan, and found 104 research projects approved in 2014. These projects are conducted in 52 different universities, with total budget of about NT 100,000,000. This special topic on “research projects related to aged society” invites the principle investigators or the approved research projects to share the abstract and “background and research purpose” of their proposals, and intends to provide more understanding and communications between research teams and facilitate further collaborations. There will be 3 issues devoting to this special topic. This issue publishes engineering related research proposals.