With the acceleration of aging population and changes of the disease spectrum，multimorbidity has become an urgent public health problem to be solved. This article searched relevant literature on medication adherence among older adults with multimorbidity both domestically and internationally， including systematically reviewing the basic information of the literature（such as publication year，research area）， defining multimorbidity，measures medication adherence，analysis methodology，etc.，to understand the current research status of medication adherence among older adults with multimorbidity，and to trace and analyze the hotspots of medication adherence related research among older adults with multimorbidity.