Strong washing and boiling resisting film system

The utility model relates to a strong washing and boiling resisting film system comprising seven layers of films which are sequentially arranged from top to bottom, wherein the first layer, the third layer, the fifth layer and the seventh layer are MgF2 film layers, and the second layer, the fourth layer and the sixth layer are H4 coating film layers. According to the strong washing and boiling resisting film system, a composite integral structure of multiple MgF2 film layers and multiple H4 coating film layers is adopted, so that the strong washing resisting performance and the boiling resisting performance can be improved under the circumstance of guaranteeing the reflectivity, wherein the MgF2 is fluoride, which is stable in chemical property, less affected by acid and base and extremely strong in stability and particularly when the temperature is more than 280 DEG C, and the bonding layer of the MgF2 and the H4 are compact and hard, so that compared with Al2O3, the MgF2 has the advantage that the wiping r