Abstract: Some fossil seeds of Celtis L. accompanied with the occurrence of Donghulin Man 4, whose 14C age is about 8540 BP ( c. 7500 BC) from the village of Donghulin, Zhaitang, Mentougou district of Beijing, are demonstrated separately as C. bungeana Bl. and C . cf. koraiensis Nakai. Based on the known data, seeds of Celtis L. contain rich nutrition and minerals. And therewas a long history for our ancestors to eat the fruits and seeds in north China, through  Peking Man site,  Donghulin Man site to Bancun site ( Peiligang culture) . Possibly, the grinding of Celtis seeds is one of the functions of the ground stone collected in  Donghulin Man site. Through a comparison on the development of endocarp in the living Celtis species with those of fossil seeds, it shows that the endocarps of fossil seeds are mature ( at the late autumn, i. e. , probably in October) . Therefore, it indicates that the accompanied  Donghulin Man 4 died at the same time.

Key words: Donghulin Man 4; Seeds; Celtis bungeana Bl.; Celtis cf. koraiensis