Abstract: This paper has studied the available content of such trace element including B, Mo, Zn, Cu and Fe, and also discussed the its satisfaction degree for vegetation grow-up needs as well as the correlation between available content, pH value and organic matter. The results show that the content of available. It is indicated that available Fe content is abundant to extra-abundant, for Fe it’s medium to abundant, for Cu and Mo, it’s above the average level, whereas lack of B. Based on these conclusions, suggestion for citrus planting is put forward: add enough B to the soil and to prevent excessive Fe and Cu.