The invention relates to a transformer cooling system with a state self-holding function. The transformer cooling system comprises an intelligent control device, a cooler branch group which comprisesa first cooler branch structure, a second cooler branch structure, a third cooler branch structure, a fourth cooler branch structure, a fifth cooler branch structure and a sixth cooler branch structure which are all connected with the intelligent control device; a forced switching loop module which is connected with the cooler branch group; and a double-incoming-line power supply which is connected with the intelligent control device, the cooler branch group and the strong-throw loop module. By adopting the transformer cooling system with the state self-holding function, and by improving a control loop, the problem that the control loop fails when a cooler is in a full-stop fault, is thoroughly solved, the cooler can continue to work when the control device fails, and larger operation accidents caused by the abnormal rising of the oil temperature of the transformer due to the failure of the cooling system, are prevented.