The Studies of water hyacinths’s residues by using X-ray spectrometry techniques. The results showed the most elements were Fe, Mn, Zn, Pb, Br, Rb and Sr decrease as a function of distance from the landfill waste with the decreased rate of 0.001-0.69 m-1. Ni and Cu did not show the decrease. Probable these two elements were not chiefly originated from the landfill waste.