The present invention relates to a flexible catheter comprising: an insertion unit comprising multiple bending parts disposed in a lengthwise direction； an operation unit connected to the insertion unit； direction-controlling wires which have an end connected to the operation unit and the other end fixed to the insertion unit and are configured so as to bend the bending parts according to the length pulled by the operation unit； and limiters provided on the direction-controlling wires and configured such that the respective multiple bending parts are sequentially bent as the direction-controlling wires are pulled. The flexible catheter using wires, according to the present invention, allows for smooth steering of 180 degrees or more, is capable of sequentially bending the bending parts and thus steering to an angle optimized for a particular tissue, and therefore has the effect of efficiently and accurately carrying out a surgical operation.
