The invention discloses a student chair with a sitting-posture adjustment reminding function and an adjustment reminding method, and belongs to the technical field of desks and chairs for schools. The student chair comprises four identical pressure sensors, four alarms, and four pressing blocks corresponding to acupoints, wherein the pressure sensors and the alarms are all connected with a central processing unit system, upper surfaces of the pressure sensors are lower than the upper surface of the chair, and a protective layer capable of moving on the surface of the chair is arranged on the upper surface of each pressure sensor. The sitting-posture adjustment reminding method comprises the steps as follows: first of all, parameter relationships of students in different sitting postures are calibrated; then front and back sitting-posture determination is performed; finally, left and right sitting-posture determination is performed. The student chair is not only low in cost, powerful in function and broad in market prospect, but also accurate in data, and has effects of health care and massage at the same time; more importantly, the student chair can also be adapted to students of different sizes.