Abstract: In our laboratory several types of domestic coal-base charcoals are selected and impregnated and examined for their main physical and chemicalperformances. The results show that under the test conditions the iodine-removingefficiencies of these impregnated coal-base charcoals are not poorer than that ofthe impregnated fruit-shell base charcoals (such as coconut shell charcoal) andmost of their physical properties can satisfy the requirements of the nuclear gradecharcoals assigned in USA standards. More detailed studies will be made in ournext programme.