Abstract: Abstract：Samples of rocks, soils and navel orange trees were taken systematically in several orchards located in different geological conditions characterized by rich or poor REE in southern Jiangxi Province. The contents of 15 rare earth elements in these samples were measured by using the method of ICP-MS, and the distribution, migration and accumulation of REE in rocks, soils and navel orange plants were studied. Some conclusions have been reached: a. The content of REE in the bedrock affects or decides the content of REE in all layers; b. The content of REE in soil directly affects the content of REE in navel orange plants; nevertheless, they are sometimes not in a direct proportion with each other; c. The distribution pattern of REE in bedrock seems to be the same in every layer of the soil and in all organs of the navel orange plants; d. General trend of the percentage content of REE in rock, soil and navel orange plants is that the proportion of the light REE increases gradually and that of the heavy REE decreases gradually. However, the percentage content of the heavy REE somewhat increases in the peripheral organs of navel orange plants; e. In the three-dimensional profile of the rock-soil-navel orange system, the vertical direction of movement of the REE assumes the relationship between vectors. f. The content of REE in navel orange flesh is lower than the limitation standard stipulated by national food and health regulations.