Disclosed are an adjustable artificial chordae tendineae fixing assembly and an implanting method thereof. The adjustable artificial chordae tendineae fixing assembly includes an occlusion device (1) and an adjusting rod (3) which are both a hollow structure allowing the artificial chordae tendineae to pass through. The occlusion device (1) is configured to be clamped on the interventricular septum. The occlusion device (1) is provided with a switch adjusting device (2) which controls the artificial chordae tendineae to move and to be fixed. The adjusting rod (3) is connected to the occlusion device (1), and is capable of repeatedly adjusting the switch adjusting device (2) on the occlusion device (1). The artificial chordae tendineae fixing assembly can fix the artificial chordae tendineae on the interventricular septum, and can also overcome the problem of unsuitable length of the artificial chordae tendineae in most of patients after the procedure due to cardiac changes. The artificial chordae tendineae is retained at the skin puncture point for a short time. The length of the artificial chordae tendineae is adjusted again according to a cardiac change of the patient in an early postoperative period, so as to realize the function of repeatedly adjusting the artificial chordae tendineae.
