Abstract: [Objective] The research aimed to study the influences of Calcium cyanamide concentration on the peanut's growth and yield and economic benefit.[Method] Through the test in the field,the influences of the different concentration gradient of Calcium cyanamide on peanut's yield and economic benefit were studied in the same environmental condition.[Result] The right amount of Nitrogenous fertilizer could promote peanut's growth,increase the accumulation of the dry material upside the ground and the number of nodule in the stage of the seedling,and enhance the output of the peanut pod.Excessive Nitrogenous fertilizer could reduce the economical coefficient,also could drop the pod output.The safe and effective amount of the new Calcium cyanamide was 75-225 kg/hm2,also the peanut might obtain the most superior agronomic characters indices and got the maximum economic efficiency in the amount of 150 kg/ hm2.[Conclusion] This Calcium cyanamide made by Germany was perfect fertilizer to peanut.