In view of the process requirements of green shipbuilding technology development for ship section cleaning and rust removal, the ship section laser rust removal technology is studied. The laser rust removal test is conducted on the ship section test samples with different surface conditions. Compared with the traditional sand blasting in cleaning effect, operation environment, and investment and operation cost, the effect and applicability of laser rust removal are analyzed. The results show that the laser rust removal technology applied to ship section rust removal is of the advantages of low energy consumption, little pollution, and good working environment. The laser rust removal can provide a new method for ship section rust removal.