"全套男式晚礼服" can be translated as "full set of men's evening tuxedo" or more naturally, "a complete men's evening tuxedo outfit".
Here, "tuxedo" refers specifically to a formal evening suit for men, often worn at black-tie events. "Full set" or "complete outfit" emphasizes that it includes all the necessary components, such as the jacket, trousers, shirt, bow tie, and possibly a waistcoat or cummerbund, depending on the specific style.
If you want a more concise and commonly used expression, "men's evening tuxedo" or simply "men's tuxedo" (when the context makes it clear it's for evening wear) would suffice in many situations.