Abstract: The radial and axial bending stresses of windings are key indicators to characterize the ability to withstand short-circuit of a transformer. The calculation of its value needs to be converted by the curing coefficient, and the value of the curing coefficient is very important. A test method for studying the radial and axial curing coefficient of epoxy continuously transposed conductors(CTC) is proposed. Through the tests, the rules of the curing coefficient under the conditions of different temperature, the number of transposed cores, the size of the cores, and the backing paper are obtained. The results show that the temperature and the number of transposed cores are the main factors affecting the curing coefficient, and the size of the cores and the backing paper have hardly any effect. When the temperature increases from 20 ℃ to 120 ℃, the average value of the axial curing coefficient will decrease monotonically from 3.4 to 1.0, and the average value of the radial curing coefficient will decrease monotonically from 48.6 to 2.8. When the number of transposed cores increases from 7 to 79, the average value of the axial curing coefficient will decrease by about 35%, the radial curing coefficient shows a trend of first increasing and then decreasing, and the inflection point usually appears in the range of 27~39. The correction results of the curing coefficient under multi-factor conditions are obtained. When the temperature is 105 ℃ and 120 ℃, the range of the curing coefficient in the radial direction is 3.0~16.4, 0.7~3.6, and the range of the curing coefficient in the axial direction is 1.1~1.6, 0.7~1.1, respectively. The research provides a basis for the check of the transformer's ability to withstand short-circuit.