Carrier platform of nucleic acid extraction and purification instrument

The utility model discloses a carrier platform of a nucleic acid extraction and purification instrument, relates to the technical field of installation of nucleic acid extraction and purification instruments, and solves the problems that an existing carrier platform of the nucleic acid extraction and purification instrument cannot adapt to clamping of different samples due to the fact that checking test tube samples are more and are easy to mix in the operation process and the specifications of different checking test tube samples are different. Therefore, the technical problem of certain limitation on the sample volume operation is solved. Comprising a nucleic acid purifier body and a purification bin arranged on the nucleic acid purifier body, the carrier platform is arranged on the nucleic acid purifier body and located in the purification bin, and a fixing jig is arranged on the carrier platform; the fixing assembly comprises a plurality of placing cavities formed in the fixing jig; the nucleic acid test