Abstract：The paper discusses the influence of soil parent rocks on the output and quality of Chinese date in the agrogeological context. Investigation shows that Chinese dates with a good quality and a high output in the Xingtang mountainous area, Hebei, are mostly distributed in the biotite-plagioclase gneiss area. It is mainly because, in comparison with other types of mantle rock, biotite-plagioclase gneiss is thick with well-developed cracks and contains higher P, Sr and ∑REE and its contained K is higher and occurs in the slow-effect state in biotite and thus is easily absorbed by plants. Analysis of the soil geochemical background, the area of good-quality Chinese date best coincides with the area rich in P, Sr, Na and ∑REE, while Ni and Cr are lower. It also validates the consistency of the areas of Chinese date with the areas of its soil parent rock—biotite-plagioclase gneiss.