Abstract: The hydraulics course is known to have many concepts, formulas, coefficients and complicated calculations.Higher vocational students encounter many problems,such as low interest in theoretical study and poor ability to think.According to the characteristics of students as well as hydraulics course,it puts forward the classroom teaching mode with the help of Mind-map.Taking the section of “Weir flow and sluice flow calculation” as an example, it uses this method to testify the teaching effect.The practice shows that the combination of the Mind-map and the real teaching content can help students to clarify their ideas, distinguish the applicable range of formulas and parameters,and establish a good knowledge network.At the same time, through Mind-map teaching, students’ learning interest and learning efficiency are improved.Furthermore, it has a positive effect on building students’confidence and enhancing their willpower.The teaching mode can be extended to other mechanics course reform practice.