Traditionally, software test for refrigeration equipments is based on an integral auxiliary system that simulates HVAC units, with manual test as the dominant approach marking low efficiency. The theory of virtual instrument will be introduced in this paper into the test for refrigeration equipments, and LabVIEW technology will be used to upgrade current test system. As indicated in the practice, the proposed application can effectively improve the test flexibility and reliability, enhance the level of test automation and versatility, elevate test efficiency and demonstrate broad practical value.