Sample pretreatment device and nucleic acid and fecal sample pretreatment method

The invention discloses a sample pretreatment device and a nucleic acid and excrement sample pretreatment method. The sample pretreatment device comprises a machine body assembly, the machine body assembly comprises a rack, a TIP frame, a sample tube frame, a cover opening module, a mechanical arm module, a nucleic acid extraction module and a control module, the cover opening module is arranged on the rack and used for opening and closing a tube cover of a test tube, and the mechanical arm module is arranged on the rack and used for transferring the test tube and transferring a solution through a TIP gun head; the nucleic acid extraction module is arranged on the rack and used for extracting nucleic acid products of the sample. According to the sample pretreatment device disclosed by the embodiment of the invention, the actions of the mechanical arm module, the uncovering module and the nucleic acid extraction module can be controlled through the control module to perform sample pretreatment, so that manual