cadmium is a toxic metal that can inflict irreparable effects on the body of animals and humans even at very low concentration. one way of transferring this metal to the human body is contaminated water. in this dissertation a new method of micro solid phase extraction is used to extract and measure cadmium ions from aqueous solutions. First, a layered double hydroxide Fe-Cr LDH Nanosheets absorbent was synthesized from a Co-precipitation method. this absorbents are cheap, have a simple synthesis method and eco friendly. the absorbent was used to micro solid phase extraction cadmium from aqueous environments. from a whatman filter paper and 0.5 cm magnet were used to keep the absorbent inside the solution. cadmium desorption was performed by EDTA solution at a concentration of 0.2 molar. the amount of cadmium contained in the desorption solution was determined by Flame atomic absorbtion spectroscopy. to obtain the best extraction efficiency, the test conditions were optimized. 30 min of absorption time from 50 mL of cadmium solution with pH equal to 6 and 50 min of desorption time in 1 mL EDTA solution with pH equal to 10 as the optimum conditions test were obtained. in this study, the detection limit of the method was 0.003 mg/L and dynamic range 0.01-0.44 mg/L was obtained. relative standard deviation of the method is 2.5%. Finally, three samples of drinking water, the Zarjoob river of Rasht and the industrial waste water were evaluated for the evaluation of the method in natural samples with complex tissue.