To solve the problems in the prior art that though the carbon fiber reinforced resin-made support bar is light-weight and excellent in high rigidity, machinability after molding is not good as compared with a metal, in particular, the carbon fiber reinforced resin-made support bar is liable to crack or chip to cause defective products in machining such as cutting and drilling, and provide a carbon fiber reinforced resin-made support bar improved in machinability and not causing defects in machining while keeping excellence in light weight and high rigidity possessed by the carbon fiber reinforced resin.

The carbon fiber reinforced resin-made support bar is made by arranging a fiber-reinforced resin containing a reinforcing fiber having a breaking extension of 3 to 20% on a surface of a carbon fiber reinforced resin having a length of 1.5 to 3.0 m and a cross sectional area vertical to the lengthwise direction of 50 to 400 mm2.