The invention provides an organic flexible film microwave signal detector and a manufacture method thereof. The organic flexible film microwave signal detector is characterized by comprising a flexible substrate (1), a first antenna arm (201), a second antenna arm (202), a lead (203), a P type layer (301), an N type layer (302), a chip resistor (4), a chip capacitor (5) and an insulating layer (6). The antenna arms used by the organic flexible film microwave signal detector can be used to detect microwave signals in the surrounding, the capacitor and the resistor can convert the microwave signals into electrical signals, an external circuit can reflect practical feedback information, a sensor of the organic film form can be pasted to the surface of an object due to the random shape and area of the sensor, and the sensor can be integrated on the same flexible film with other organic devices.