This experimental study was conducted to evaluate the seismic performance of beam-to-column connection of mid/low-rise building. Four specimens with beam-to-column connections of SHN490 steel were prepared depending on joint types: (1) web welded & flange welded; (2) web welded & flange bolted; (3) web bolted & flange welded; and (4) web bolted & flange bolted. All of beam-to-column specimen size were used H-300 150 6.5 9. Relatively less stiff connections were made by using seat or web angles. Cyclic loading was applied at the tip of beam following AISC 360 load protocol. Applied load vs. rotation relationship for different connection are shown. Two connection with flange welded were governed by the panel zone strength but two connection with flange bolted were governed by the failure of seat angle with large rotation.