Body of sucker rod is manufactured by using pull-squeeze molding technique through materials of phenol-formaldehyde resin as basis material, and carbon fiber and fiberglass as reinforcing material. Body of sucker rod is in oblate shape and flexible continuous type, providing properties of higher intensity, modulus, anticorrosion, antifatigue and heat stable higher than 150 deg.C. Advantages are easy of transportation and installation, saving energy, suitable to oil extraction in deep wells and ultra deep well.