The invention relates to an intelligent servo oxygen therapy control system, which is mainly formed by a blood oxygen measuring device (1), a communication module (2), a control unit (3), an electronic flow valve (4), an information reminding module (5), an oxygen input port (6), and an oxygen output port (7). The anoxia degree of a patient is judged by adopting an oxygen saturation value obtained in real time, and an oxygen therapy scheme is given by a built-in oxygen therapy data model, so the medical treatment of an oxygen uptake link is more precise and scientific; the dynamic oxygen saturation value is adopted, change of the anoxia degree of the patient is judged in a tracing manner, and an oxygen therapy flow value is automatically corrected by the control unit, so not only is the clinical effect of the oxygen therapy ensured, but also unnecessary consumption of oxygen is reduced and a large quantity of cost is saved for medical units.