Underarm odour detector

The utility model discloses an underarm odour detector which comprises a gas collection device, a gas detection device, a power supply and a power switch. The underarm odour detector has the advantages that the evaluation reference of a doctor of the skin department to the severity of underarm odor is objective, and the number values are precision. Particularly for the surgical indication, the underarm odour detector has a digital standard, and for a patient with underarm odour, the curative effect can be determined through the underarm odour detector, even the underarm odour detector can assist in eliminating the underarm odor hypochondriasis; and the underarm odour detector has a simple structure and easiness in operation.