The phenomenon of imitating the disbelievers has spread in the muslims countries.And from the features of imitating them in our nation is imitating their feasts like what is known by (Feast Of Sham Al Naseem).In this article the writer demonstrated the origin of Sham Al Naseem,features of celebrating it ,the ruling of celebrating and refuting the suspicion of celebrating without believing in what disbelivers believe in.