Chlorine　dioxide　has　been　widely　used　as　an　internationally　recognized　safe　and　non-toxic　green　disinfectant.　Chlorine　dioxide　has　been　listed　as　an　A1　disinfectant　by　the　United　Nations　Health　Organization　(WHO).　Its　strong　oxidation　can　achieve　sterilization,　disinfection,　preservation　and　other　effects　and　is　widely　used.　Compared　with　liquid　chlorine　dioxide,　solid　chlorine　dioxide　preparations　have　the　advantages　of　high　stability,　easy　to　transport　and　so　on,　and　have　a　wider　application　range.　In　this　paper,　the　research　status　of　solid　chlorine　dioxide　in　recent　years　is　summarized　into　reaction　type　and　adsorption　type.　Most　solid　preparations　also　have　disadvantages　such　as　difficulty　in　controlling　the　release　rate　and　insufficient　release　time.　Among　them,　the　gel-type　sustained-release　agent　can　improve　these　shortcomings　and　provide　a　reference　for　the　future　development　of　chlorine　dioxide　solid　preparations.　©　2021,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.