Taking the spraying line of an exterior decoration part as an example,the typical energy saving schemes of its application were summarized.The application of paper box paint mist treatment technology has replaced wastewater treatment problems.Reasonable planning of exhaust gas emission concentration is to enable self heating combustion.The utilization of RTO waste heat recovery technology has saved the combustion consumption of fresh air conditioners.The comprehensive application of clean exhaust reduces the demand for fresh air.The strategy of controlling refrigeration energy saving reduces the electricity consumption in winter.Industrial insulation technology reduces heat loss.Some of the energy saving schemes summarized above can be used as reference for other similar projects,but the specific planning should be adapted to local conditions and the appropriate scheme should be selected.