The disclosure provides a method for measuring a frame loss ratio. A first end acquires a frame number of a received current measurement reply frame and a frame number of a received previous measurement reply frame, and judges whether the difference between the frame number of the current measurement reply frame and the frame number of the previous measurement reply frame is 1; if the difference is 1, the first end calculates the frame loss ratio according to count information carried in the current measurement reply frame and the previous measurement reply frame; and if the difference is greater than 1, the first end calculates the frame loss ratio according to the count information carried in the current measurement reply frame and the previous measurement reply frame and the difference.