The invention discloses a coal body and anchoring agent interface bonding strength testing method. The method is characterized in that according to coal body existing conditions, a coal matrix (1) iscompacted, a through hole (2) is formed at middle of the coal matrix (1), an elastic circular column (3) is placed at the middle of the through hole (2), an anchoring agent cylinder (4) is formed by injecting an anchoring agent in the through hole (2), the elastic circular column (3) is subjected to pneumatic compression, after the anchoring agent is completely acted while a certain air pressure is kept, the elastic circular column (3) is changed to a rigid cylinder (6), two ends of the through hole (2) are plugged to form a test piece, then the test piece is placed on a servo press (10), an aperture same with the through hole (2) is placed at a lower part of the test piece, the aperture is aligned with the through hole (2), a pressure head (8) is a cylinder having a same diameter with theanchoring agent cylinder (4), the pressure head (8) is lowered for testing the bonding strength, and finally data is collected for analysis. The real coal body is taken as an anchoring matrix, and the testing result is more close to on-site condition.