The invention discloses a tea-making clip capable of adjusting height. The clip comprises a handle which is clipped and fixed at the edge of a rim of a cup and a container which extends into the cup, wherein a unidirectional moving device which adjusts the height of the container in the cup is connected between the handle and the container; the unidirectional moving device comprise a chute which is integrally arranged with the handle, and a guide rod which is fixed on the container and is slidably matched up and down with the chute; a ratchet bar is arranged on the back of the guide rod along the length direction; a rotating handle with a torsional spring is rotatably arranged on the chute; and the rotating handle is integrally provided with a shifting fork and a knob matched with the ratchet bar. Through the unidirectional moving device, the container where tea leaves or a tea bag is placed not only can be fixed in height, but also can be adjusted in height. A cover is additionally mounted on the container, so that the tea-making clip can be used for the tea bag or bulk tea leaves at the same time, and therefore, the problem that an existing tea bag fixing device has no effect on bulk tea leaves is solved, and the problem that the height of a common tea bag cannot be adjusted in height is solved in a mechanical manner.