This course relate to basic theory and technique of hydraulic and pneumatic power transmission.The main contents include the foundation theories and basic knowledges of hydraulic and pneumatic power transmission;the principles , characteristics and applications of power components, control components, executive components and accessorial components; the principles characteristics and applications of the hydraulic and pneumatic power transmission basic circuits; Analysis of multi- cylinder cooperation hydraulic system ; design ot hydraulic and pneumatic power transmission system and selection of their components;This course adopts the multi-media teaching method, making use of the colourful diagram, the real object picture and animation, make easy for student to study and comprehend. For the course we have the more complete hydraulic power transmission experiment equipments including components, circuits and systems.;we also have a set of pneumatic experiment equipments.it contains the pneumatic logic control experiment, the electric appliances logic control experiment and PLCs control experiment . the relative experiment data and practices are also provided.