The present invention relates to a catheter device capable of adjusting the distal angle, more specifically, as a catheter device, a tube having an elongated shape of flexibility, a catheter body inserted into the body, one end is disposed at the end of the catheter body It is fixed to the fixed portion, the other end is guide line drawn out to the tip of the catheter body, and from the fixing portion of the end of the catheter body, at a point moved by a predetermined interval in the direction of the catheter body tip, the guide line is the catheter body Including an inlet hole that can be introduced into the interior, by adjusting the length of the guide line, characterized in that the configuration of adjusting the distal angle of the catheter body. In addition, the present invention relates to a method using a catheter device capable of adjusting the distal angle, more specifically, a tube having a long elongated flexibility, the catheter body is inserted into the body, one end is disposed at the distal end of the catheter body Fixed to the fixed part, and the other end is guide line drawn out to the tip of the catheter body, and from the fixing part of the end of the catheter body, at a point moved by a predetermined interval in the direction of the catheter body, the guide line is the catheter A method of using a catheter device comprising an inlet hole that can be introduced into the body, the method comprising the steps of: (1) a catheter body, which is a tube having an elongated shape of flexibility, is inserted into the body, and (2) the Adjusting the distal angle of the catheter body by adjusting the length of the guide line. And a gong. According to the catheter device which can adjust the distal angle proposed in the present invention, the fixing portion disposed at the distal end of the catheter body, the inlet hole disposed at a point moved by a predetermined interval in the distal direction of the catheter body from the fixing portion, and one end By