Substance extraction device and substance detection device

The utility model relates to the technical field of substance extraction and detection, in particular to a substance extraction device and a substance detection device, which comprise a cavity, a flow regulating valve, a negative pressure pump, a wastewater container and an evaporation container, a support and a heating assembly are arranged in the cavity, a first through hole and a second through hole are formed in the cavity, the first through hole is connected with a flow regulating valve, the second through hole is connected with a negative pressure pump through a connecting pipe, and the negative pressure pump is used for forming a vacuum environment in the cavity; the waste water container or the evaporation container is arranged on the support in the cavity and used for receiving liquid flowing in from the first through hole, the waste water container is arranged on the support and used for sewage concentration operation, and the evaporation container is arranged on the support and used for elution ext