The present invention provides a sample collection detector, comprising a sampling device, a detecting device and a communicating device, wherein the sampling device has a sampling chamber and a sample feeding rod, the sample feeding rod is inserted into the sampling chamber to finish sampling； the communicating device has a sample feeding channel that is in communication with the sampling chamber and detecting device, a valve assembly is provided between the sample feeding channel and the sampling chamber, the valve assembly is initially closed, the sample feeding channel is separated from the sampling chamber, the sample feeding rod triggers the valve assembly to open and communicate the sample feeding channel and the sampling chamber.
