Provided are a method and an apparatus for transmitting uplink control information (UCI), which is carried out by a terminal in a wireless communication system. If the number of information bits of the UCI falls inside a specific range when different types of UCI are transmitted through the same PUCCH format, a bit sequence of each of the UCI are channel-coded by aligning/interleaving, wherein the aligning/interleaving is carried out so that the UCI having high importance are channel-coded so as to have better decoding performance.