The Environmental Qualification Test of civil aircraft airborne equipment is to demonstrate that the equipment meets the applicable environmental standards, and further meets the Technical Standards Order applicable to it, which is of great significance to the airworthiness certification of airborne equipment. At present, the Environmental Qualification Test of civil aircraft airborne equipment in domestic is still in the continuous improvement stage. This paper takes the environmental qualification test of certain airborne equipment as an example, introduces a set of workflow for the Environmental Qualification Test, including three stages: Environmental Qualification Test plan development, environmental test procedure development, and qualification testing. Then combined with the Minimum Operational Performance Standard (MOPS) applicable to the equipment and the DO-160 standard (Environmental Conditions and Test Procedures for Airborne Equipment), it describes in detail about the work content and focus of each stage in the workflow, as well as the planning of airworthiness liaison and suggestions. This equipment has got the TSO approval, indicating that this workflow can be effectively applied to the Environmental Qualification Test of airborne equipment and support for the airworthiness certification, and can also provide reference for the Environmental Qualification Test of subsequent airborne equipment.