The short iodometry method in the national standards is easy to conduct and has no serious requirement for equipment and is widely applied when it is used to determine copper in copper concentrates.The details,including electric furnace temperature,titration time,shaking manner,agent addition time in the test are investigated.Under the optimal conditions determined by the test,the error of the determination results of the method is 0.002 % and the RSD is 0.166 %,the accuracy and precision are good.