[the industrial plants in order to meet the demand of industrial production and processing, factory space is tall and the scale of the characteristics and requirements of different production process of industrial plant temperature, humidity and other environmental parameters vary, so design of industrial building HVAC system put forward new requirements. During the new period of HVAC design for industrial plants out of the need to consider the heating, outside the function design of ventilation and air conditioning system must also be both energy conservation, environmental protection, harmless and other issues. This paper is combined with the actual case of an industrial workshop, analysis of industry factory HVAC design matters needing attention and treatment, hope to be able to pay attention.