Abstract: This paper proposes a fuzzy mathematical method for predicting the speed of the cutting head of a cantilever roadheader based on fuzzy mathematics, in view of the difficulty of identifying the cutting load in the process of underground roadheading. By analysing the working process of the cutting head of the roadheader and fusing the information from multiple sensors measured underground, the predicted output of the cutting head load is obtained and the cutting head speed is divided into four gears, which provides a basis for in-depth research on the adaptive control of the cutting head speed under different working conditions.