The invention discloses a kit for helping to determining a recurrent risk of endometrial cancer. The kit comprises a parameter acquisition device and a readable carrier. The parameter acquisition device comprises a device for acquiring related various parameters in the readable carrier. The readable carrier records the contents of the following formulas I to IV. The formula I is that PI=0.867*FIGOII stage + 1.442 * FIGO stage III +2.717 * FIGO stage IV + 1.426 * G + 1.067 * tumor diameter + 0.898 * ascites tumor cell. The formula II is that P = PI - 1.431, wherein P represents a linear predicted value. The formula III is that P3 = S0(3)expP, wherein S0(3) represents the endometrial cancer average recurrence-free survival probability at the third year; and P3 represents the endometrial cancer recurrence-free survival probability of a tester within 3 years. The formula IIII is that P5 = S0(5)expP, wherein the S0(5) represents the endometrial cancer average recurrence-free survival probability at the fifth year; and P5 represents the endometrial cancer recurrence-free survival probability of the tester within 5 years. The kit can predict the endometrial cancer recurrence-free survival probability within 3 years and 5 years, classifies endometrial cancer patients into a high-risk group and a low-risk group according to the optimal threshold of 0.5186 for risk stratification, and contributes to clinical treatment guidance and follow-up visit.