KJMCS publishes only original research papers that are judged after peer review. Papers on a wide range of sciences will be accepted as long as they are related to medical crops. There are main six categories as follows: 1) Cultivation, physiology, and environments, 2) Genetics and breeding, 3) Biotechnology, 4) Quality and evaluation of physiological activity (in vitro, in vivo, etc.), 5) Chemical analysis, 6) Others related to medicinal crops.