Heterogeneous coated steel sheet having excellent workability and corrosion resistance, and method for manufacturing same

A method of manufacturing a heterogeneous coated steel sheet having excellent workability and corrosion resistance, the method comprising:

• preparing a steel sheet;
• levitating a coating material by electromagnetic force in a vacuum chamber to generate zinc deposition vapor, and forming a zinc coating layer having an adhesion amount of 5 to 60 g/m2 on one surface of the steel sheet by inducing and ejecting the zinc deposition vapor;
• and
• generating zinc-magnesium alloy deposition vapor by levitating a coating material by electromagnetic force in a vacuum chamber, and forming a zinc-magnesium alloy coating layer having an adhesion amount of 10 to 40 g/m2 on the other surface of the steel sheet by inducing and ejecting the zinc-magnesium alloy deposition vapor,
• wherein a Mg content contained in the zinc-magnesium alloy deposition vapor is 8 to 30 weight %.