The invention discloses a travel risk control method in a high-risk road segment. The method comprises the steps that 1, a road segment in unit length is selected, and the high-risk road segment in anaccident set is obtained through calculation; 2, traffic flow on the high-risk road segment is divided into two states; 3, a high-risk region is divided into two functional segments, namely an early-warning segment and the high-risk road segment; and 4, according to a spatial layout of the early-warning segment and the high-risk road segment shown in the step 3, the arrangement position of information publishing equipment is obtained. According to the method, firstly, the appropriate road segment unit length is selected for a research object, several different combinations are divided in combination with a dynamic segmented movement step length method; next, a Relim algorithm is adopted to mine a frequent item set in each combination, the number of traffic accidents and casualties are quantitatively processed, and the traffic accident high-risk road segment small in length and in the accident set is obtained; and then accident influence factors in the found high-risk road segment aresubjected to association rule mining.