The invention provides a method for drying through a temperature sensor of a roller washing machine. The method is that three temperature sensors are arranged to operate. The method comprises the steps of 1, presetting T1max, T2min and T2max; 2, drying, namely, synchronously starting a condenser, a water feeding valve, a draining pump, a condenser, a blower pump and a heater, or starting to circulate hot water, and determining that the clothes are dried after any one of the two necessary conditions is met during drying; 3, dynamically detecting t1, and finishing drying when the t1 is less than 50 DEG C. According to the method, the three temperature sensors are matched to monitor and determine the state, and the determining method is the same and free of influence of the clothes load in the washing machine and the water content rate of the clothes, so that the drying effect can be accurately determined; a certain fuzzy artificial intelligence function is achieved.