Objectives : This report was performed to report the present situation of the adverse reactions of chuna manipulation in Korea. Methods : Searches were conducted on Internet based field. We investigated the cases reported from Korea Consumer Agency and the "Minwon Baekseo" published by Korean Oriental Medicine Society. Results & Conclusions : The relevant cases and papers were of small number. The most adverse reaction of chuna manipulation was disc herniation. The serious adverse reactions were Cauda equina syndrome(CES) and Cerebral infarction. Most of serious adverse reaction cases were performed by non proffesional therapist. We should give chuna treatment to patients after sufficient education. We expect more case reports and systemic studies about adverse reaction and effect of chuna manipulation.