Abstract: The experiments of this work were conducted at the laboratory of the Tree Seed Centre, Khartoum, Sudan, on April 2013, to investigate the variation of of Ziziphus spina-christi A. Ritch fruit pulp weight /Kg., number of fruits/Kg. and number of seeds/kg. among four provenances; Daamazin, Sinar, Shambat and golo. The results showed very high differences between provenances in the pulp weight/Kg. (P=0.0001), and high differences in number of fruit/Kg. and number of seed/Kg. among provenances, and Damazin fruit source was the higher in fruit pulp weight, and has the larger size of fruits and seeds. The outcome of this work revealed the importance of these kinds of studies in encouraging tree improvement, genetic resource conservation and food industry of many forest tree fruits.