In order to investigate the impact of superphosphate, thermophosphate and phosphorite on the accumulation of phosphorus in rice plants, experimental pots set up at the Experimental Garden of the Faculty of Biology, Hanoi National University of Education. Each pot was filled with 10 kg of air-dried Red River alluvial soil. To each pot was added 2.7 g of organic fertilizer, 1.25 g of superphosphate, 1.45 g of thermal phosphate or 1.45 g phosphorite. The experimental pots were arranged in a random order with four replications per treatment. This study showed that phosphorus is irregularly distributed in rice plants. In the tillering stage about 60 percent of the phosphorus in the plant accumulates in the stems. In the flowering stage some phosphorus moves from the stems and leaves to the panicles. In the harvest stage, most of the phosphorus is concentrated in the grain. Of the 3 fertilizers used in this experiment, the greatest accumulation of phosphorus occurred in plant grown in soil with superphosphate. A lesser accumulation occurred with the use of was thermophosphate. The least accumulation of phosphorus occurred in the rice plants grown with phosphorite. the authors ignored the plants that were grown in soil with organic fertilizer.