Two methods are widely used to improve absorbing properties of the microwave magnetism absorbing agent: mixing with the other material such as resistance carbon fiber absorbent, or wrapping the microwave magnetism-absorbing agent in that material. However, do these two methods coincide with each other? If not, which method should be used as better way to represent the absorbing properties of magnetism-absorbing agents? To answer these questions, both methods are carried out on the same magnetism absorbing agents, of which the results are compared. Distinct difference between these measured results is found, and the possible reasons for the difference are also discussed.