A bionic posture correcting frame for leaning on in study comprise a body composed of a frame body and an installing frame. When a user sits on a chair behind a desk, an adjusting mechanism is provided on the body which is located between the desk edge and the breast and the abdomen of the user, and between the chin and a position from the lower abdomen to the little over the thigh. The adjusting mechanism is a fist away from the desk edge to realize a right "front-position", "back-position" and study posture between the two positions and can be converted optionally. The mechanism can match with general desks and chairs or bionic posture correcting desks and chairs, and can effectively ensure that a reasonable activity space is formed between the desk and the chair for parts of body such as the head, eyes, the neck and the breast and so on.