Shenyang Pharmaceutical University informed students the ban was to help them develop their own “cultural confidence”.
And the university claimed youngsters have been "blindly excited" by Western holidays.
The statement said: “In recent years, influenced by Western culture and individual business operations, as well as erroneous public opinions expressed on the Internet, some young people are blindly excited by Western holidays, especially religious holidays like Christmas Eve and Christmas Day.”
Now the University has banned the students' union from holding Christmas-related activities.
The ban was put in place "in order to guide the youth league members in building cultural confidence and resisting the corrosion caused by Western religious culture", it added.
China, as an atheist country, does not celebrate Christmas.
It is is not the first time a Chinese institution has banned Christmas. Three years ago the North-West University, located in Xi’an, also banned celebrations connected to the festive season.
The university strung up banners saying: “Strive to be outstanding sons and daughters of China, oppose kitsch Western holidays” and “Resist the expansion of Western culture”.