This paper discusses the necessity of teaching mathematics in Junior High Schools with an awareness of the Junior High School-High School Connection.We have organized,analyzed,and discussed the practice of problem-based learning using the ridge of Salt Mountains.As a result,we found that the practice of approached the definition of the bisector of an angle and the parabola,which are the contents of the study of mathematics in High School.The students acquired new knowledge and concepts that connect the study of Junior High School-High School as they worked to solve the problem.In the future,we would like to consider using the ridge of Salt Mountains as a subject for lessons at each grade of Junior High School.