Test agent for quickly identificating ture or false leather

The invention discloses a quick incrimination testing reagent and the device for leather. The reagent is made up of electrolyte and non-ion surface activator, the electrolyte includes: sodium chloride or kalium chloride; the non-ion surface activator includes: average or penetrant T. the device is made up of external cavity, wire, detector and outgoing aperture wire. The inner wire is arranged in the external cavity and connected to a sensitive detector, another end of the inner wire is connected to the circuit through the outgoing aperture wire, and the function of the circuit is: the exhibited light is lighted on when the resistance of the leather is smaller than R2, otherwise, it is off. The incrimination to leather can be realized on spot, it is quick, and it does not damage the leather.