Bioactive substance extractor

The utility model provides an automatic instrument for efficiently extracting bioactive substances, which comprises a shell, a bottom plate, a workbench, a magnetic needle, a magnetic needle moving mechanism, a sleeve, a sleeve moving mechanism and an airflow generation system, wherein the system is used for generating a local airflow in the upper area of an opening of a container with an upward opening and placed in a sample treatment area, and comprises an airflow source and an airflow channel; the airflow source can generate an airflow; the airflow channel can guide the airflow to horizontally pass through the upper area of the opening of the container; and the airflow generated by the airflow source flows along the airflow channel, so that the aerosol generated by the contact between the sleeve and a sample or reagent in the container is released from the opening of the container and moves horizontally. According to the automatic instrument provided by the utility model, the microenvironment for bioactive substance extraction by a magnetic rod method is improved by generating the local airflow so as to effectively reduce the pollution caused by extracting aerosol by a magnetic rod method.