The present invention provides a resin coated metal plate on which a coating film is formed on a non-chromium substrate processing involucra, wherein the resin coating film comprises 5-40 weight parts of slow-released rust-preventive particles which are obtained through combining porous inorganic particles and metal compound rust-preventive painting relatively to 100 weight parts of coating film component except for the slow-released rust-preventive particles. After the resin coated metal plate is curved with 100 scratches with size of 1mm*1mm, the dissolving-out velocity of metallic ion from the rust-preventive painting is 0.001-1.0mg/l*m2*hr when the resin coated metal plate is immersed into carbonate pH standard solution with a temperature of 40 DEG C. The generating time of red rust can be delayed even at the end plane and flaw part which are continuously exposed to a wet environment of water through the structure.