Blackening preventing electrogalvanized steel plate and manufacturing method thereof

The invention provides a blackening preventing electrogalvanized steel plate and a method for manufacturing the steel plate. The surface of an electrogalvanized layer of the steel plate is provided with a nickel layer with the thickness of 0.05 to 10 mg/m ; and lubricating oil is coated on the external surface of the nickel layer and the thickness of the lubricating oil is 0.3 to 3 g/m . Themethod for manufacturing the steel plate comprises the step of: soaking the electrogalvanized steel plate in an acid solution containing 0.5 to 50 g/L of Ni for more than one second, or performing cathodic electrolysis processing on the electrogalvanized steel plate through the acid solution containing the Ni for more than 0.5 seconds. After being added with nickel, the steel plate caneffectively prevent the blackening of the surface of the steel plate and simultaneously has good stamping forming performance and coating performance.