In order to overcome the defects that no special equipment and proper method in the prior art are used for testing the comprehensive quality of a main spraying
nozzle, the invention provides a testing
system for the comprehensive quality of the main spraying
nozzle of an air-jet loom and a testing method. The testing
system comprises a fixed pressure supplying device, a weft tension testing device, a
stroboscope, a
wind speed testing instrument, a testing head of an actual
airflow intersection point of the main spraying
nozzle, an adjusting device of the central position of the testing head, a measurer and a main spraying nozzle bracket, and can be used for testing the design accuracy and
processing accuracy of the main spraying nozzle; in the testing method, the comprehensive quality of the main spraying nozzle is judged by testing the
load carrying capability of the main spraying nozzle, the consumption of
compressed air, the
yarn swinging amount of the main spraying nozzle, the air speed of the outlet of the main spraying nozzle, the installation accuracy of the main spraying nozzle and the air outlet pressure attenuation of
airflow of the main spraying nozzle.