Abstract: A club head angle measuring instrument comprises a balance base, a graduated curve, an adjusting rod, an indicator, a club holder and a slide unit. The adjusting rod is connected with the graduated curve at the rear end. The club holder fixed to the adjusting rod is used to hold the shaft of the club. The indicator is used to adjust the angle. The balance base has a balance block for the club head to rest. A special protractor is provided to set the angle of inclination of the club head. The slide unit has a pair of angle gauges for adjusting the sole angle, and a pair of triangular balance plates for adjusting the balance of the club head. It can be used for the manufacturer to set and correct the angle of the club head, for the distributor to assemble the club, and for the golfer to use the clubs.