The invention discloses a fastening type glass column side face slotting device. The fastening type glass column side face slotting device comprises a rack, a rotation assembly is arranged on the rack, and the two sides of the rotation assembly are provided with a fixing assembly and a grinding assembly correspondingly; the fixing assembly comprises a supporting rod arranged on the rack, a transverse plate is horizontally arranged on one side of the supporting rod, a stretchable column is perpendicularly arranged at the lower portion of the transverse plate, and a second bearing is arranged at the bottom of the stretchable column; a rotation rod is connected to the bottom of the second bearing, a first connecting disc is coaxially arranged on the rotation rod, a first concave hole is formed in the center of the bottom of the first connecting disc, a ring of columnar openings arranged at equal intervals are formed in the inner side face of the first concave hole, and a trapezoid fixing piece is arranged at the lower end of each opening; and a high-pressure spring is placed in each opening and connected with the inner side of the corresponding fixing piece, and a rubber layer is arranged on the outer side of each fixing piece. The fastening type glass column side face slotting device has the beneficial effects of being simple in structure, convenient to use, capable of meeting grinding requirements of grooves in different types and the like.