A high-strength iron-based high-chrome ceramic composite coating for a ship side plate comprises, by weight, 1.6-1.8 parts of graphite powder, 25-27 parts of chromium powder, 4.3-4.6 parts of nickel powder, 4.1-4.4 parts of ganister sand, 0.3-0.4 part of boron powder, 40-42 parts of iron powder, 10-12 parts of TiAl powder, 20-21 parts of B4C powder, 1.2-1.5 parts of nano boron fiber, 0.7-0.9 part of magnesium fluoride, 3-4 parts of zircon powder and 0.2-0.3 part of yttrium oxide. According to the metallurgy coating, the iron-based high-chrome material is used, and superior seawater corrosion resisting performance is achieved; by means of the TiAl and the B4C and alloying treatment, ceramic phases and metal phases can be combined tightly, and the association performance with the iron-based material, the seawater corrosion resisting performance, the impact resisting performance and the abrasion resisting performance are improved; and the impact resisting strength and spalling resistance of the coating are good, the number of gaps is reduced, contact between a corrosion medium and a base body of the ship side plate is effectively prevented, and the corrosion speed is reduced.