The invention relates to a surface treatment method of a neodymium iron boron permanent magnet material and a product thereof. The surface treatment method includes the steps that an aluminum and rare earth alloy layer is plated on the neodymium iron boron permanent magnet material in a vacuum plating mode, then the neodymium iron boron permanent magnet material is subjected to vitrification treatment and coated with an epoxy layer in an electrophoretic painting mode, and the neodymium iron boron permanent magnet material with the surface treated is obtained after curing. Electrophoretic paint tank liquid comprises epoxy resin and color paste. The surface of the neodymium iron boron permanent magnet material with the surface treated is sequentially plated with the aluminum and rare earth alloy layer, the vitrification layer and the epoxy layer from inside to outside, and the bonding force between the plating layers and between the aluminum and rare earth alloy layer and the base neodymium iron boron permanent magnet material is obviously improved. The surface of the neodymium iron boron permanent magnet material with the surface treated is flat, smooth, uniform, compact, free of pitting, bubbles and scales, the corrosion resistance is obviously improved, the corrosion resistance time of a salt spray test is above 1680 h, and the corrosion resistance requirements for the neodymium iron boron permanent magnet material in severe environments such as offshore wind power generation and high-temperature deserts are met. The invention further provides a neodymium iron boron permanent magnet material product manufactured through the surface treatment method.