A solar cell module back veneer material comprises a base coat layer having high adhesive strength with EVA, two layers of fluororesin-containing weather resistance coating films and an intermediate polymer basilemma between the two layers of fluororesin-containing resin weather resistance coating films, wherein at least one layer of fluororesin-containing resin weather resistance coating film hashigh light reflection performance, the base coat layer having high adhesive strength with EVA and the weather resistance coating film having high light reflection performance in the coating film arearranged at the side close to a cell sheet in an encapsulated cell module, the fluororesin-containing resin masking liquid has good coating uniformity and good adhesive force with the polymer basilemma, and contains high reflection filler component with the constituents as the follows according to parts by weight: 100 parts of fluororesin-containing resin, 3-20 parts of curing agent, 10-30 parts of high reflection filler, 0.0003-0.0001 part of catalyst, and 50-200 parts of solvent.