The present invention relates to a system and method for correcting a golf swing using the Internet, which allows a golf to correct his golf swing through the use of the Internet, thus improving the golfing ability of the golfer. The system of the present invention includes photographing means, image processing means, weight center detecting means, club head detecting means, signal processing means, control means, display means, practice center communication means, personal communication means, a Web server, a three-dimensional data generating server, a golf swing managing server, and a mail server. The system of the present invention can provide moving pictures of golf swing practice and golf swing correcting data via the Internet, so a user's golf swing can be easily corrected at a golf practice center, home or office.