Abstract: Concrete structure is destroyed seriously in many areas of our country, freezing-thawing is one of the important factors which lead to decreasing durability of concrete. The capacity of polyurea coating and epoxy coating resist frost was studied in this paper, and it showed that the quality of high performance concrete decreased by 5 percents when the cycle of freezing-thawing was 275, and the relative dynamic elastic modulus dropped to 60 percents; the surface of epoxy coated concrete was cracking when the cycle of freezing-thawing was 100, and large particles after 250 cycles, the relative dynamic elastic modulus decreased to 60 percents after 425 cycles; the surface of polyurea coating was still intact after 600 cycles, and the relative dynamic elastic modulus stayed almost unchanged.