Use of metal salt of 2-mercaptobenzothiazole

The present invention relates to use of a metal salt of 2-mercaptobenzothiazole. In particular, the present invention provides a fungicide for controlling diseases of crops, characterized in that the fungicide comprises the metal salt of 2-mercaptobenzothiazole shown as the following formula (I) and a carrier for a pesticide, wherein: M is Zn, Mn, Fe, Sn or Al; n is 2, 3 or 4. The fungicide shows very high biological activity against most bacteria, has excellent inhibitory effect on fungi as well, and is an ideal drug for integrated control of diseases of crops.