The invention relates to an adjustable anchor rod double shear mechanics performance testing simulation method. The adjustable anchor rod double shear mechanics performance testing simulation method can solve the problems in the prior art that the time and labor are wasted and the accuracy rate is low. According to the technical scheme, the adjustable anchor rod double shear mechanics performancetesting simulation method involves a base, a bottom plate, a height adjustable device, a displacement sensor, a hydraulic cylinder, a fixing plate, a concrete sample fixing plate, a connecting rod anda nut. A testing device can cooperate with different models of external press machines for simulation test, the prestress at the two ends of an anchor rod can be regulated according to the test requirements, in the test process, the external press machine is in perpendicular contact with the fixing plate and continuously increases pressure to simulate the double shear action on the anchor rod, the double shear simulation test of different kinds of anchor rods can be met, the operability is strong, the manufacturing cost is low, the practicability is high, the occurrence of anchor rod supportfailure can be effectively reduced, and a scientific basis can also be provided for water conservancy, tunnels, mines and other geotechnical engineering.