An in-vitro diagnostic device parameter updating method, characterized by comprising following steps of: identifying and collecting an assay parameter identifier, wherein the assay parameter identifier is used for determining an assay parameter; sending a data processing request to a data service platform, wherein the data processing request carries the assay parameter identifier; receiving an assay parameter value and the parameter identifier which are fed back by the data service platform; and updating a corresponding local assay parameter value according to the fed-back assay parameter value and parameter identifier, wherein the assay parameter comprises reaction mode, sampling amount or incubation time associated with an in-vitro diagnostic reagent item, wherein the data service platform comprises a manufacturer service platform and a third-party data service platform, wherein the data processing request is sent to the third-party data service platform, then the third-party data service platform searches itself to find whether a corresponding assay parameter value exists or not, and - if the corresponding assay parameter value exists, the corresponding assay parameter value and parameter identifier are directly fed back to the in-vitro diagnostic device, and - if the corresponding assay parameter value does not exist, the data processing request from the in-vitro diagnostic device is sent to the manufacturer service platform, the manufacturer service platform determines the corresponding assay parameter value according to the assay parameter identifier, and feeds back corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device through the third-party data service platform, or the manufacturer service platform itself feeds back the corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device. identifying and collecting an assay parameter identifier, wherein the assay parameter identifier is used for determining an assay parameter; sending a data processing request to a data service platform, wherein the data processing request carries the assay parameter identifier; receiving an assay parameter value and the parameter identifier which are fed back by the data service platform; and updating a corresponding local assay parameter value according to the fed-back assay parameter value and parameter identifier, wherein the assay parameter comprises reaction mode, sampling amount or incubation time associated with an in-vitro diagnostic reagent item, wherein the data service platform comprises a manufacturer service platform and a third-party data service platform, wherein the data processing request is sent to the third-party data service platform, then the third-party data service platform searches itself to find whether a corresponding assay parameter value exists or not, and - if the corresponding assay parameter value exists, the corresponding assay parameter value and parameter identifier are directly fed back to the in-vitro diagnostic device, and - if the corresponding assay parameter value does not exist, the data processing request from the in-vitro diagnostic device is sent to the manufacturer service platform, the manufacturer service platform determines the corresponding assay parameter value according to the assay parameter identifier, and feeds back corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device through the third-party data service platform, or the manufacturer service platform itself feeds back the corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device. - if the corresponding assay parameter value exists, the corresponding assay parameter value and parameter identifier are directly fed back to the in-vitro diagnostic device, and - if the corresponding assay parameter value does not exist, the data processing request from the in-vitro diagnostic device is sent to the manufacturer service platform, the manufacturer service platform determines the corresponding assay parameter value according to the assay parameter identifier, and feeds back corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device through the third-party data service platform, or the manufacturer service platform itself feeds back the corresponding assay parameter value and parameter identifier to the in-vitro diagnostic device.