Multi-section solvent reaction tube for biological nucleic acid detection and detection method thereof

The invention relates to the technical field of nucleic acid detection devices, in particular to a multi-section solvent reaction tube for biological nucleic acid detection, which comprises a reaction tube body, the reaction tube body comprises a sampling tube, and caps are arranged at two ends of the sampling tube; a top ring is mounted at the top of the dilution pipe; the heating pipe is composed of an inner pipe I and an inner pipe II; a pressing ring is arranged at the bottom of the pushing pipe, and a test paper clip mounted on the pressing ring is further arranged in the pushing pipe; the sampling pipe, the diluting pipe, the heating pipe and the pushing pipe are connected in sequence. The multi-section solvent reaction tube for biological nucleic acid detection provided by the invention can be subjected to whole-course closed operation in a common environment, and the steps of separation, extraction, dilution, amplification and detection are free from exposure links through the solution sealing film. T