The invention provides a fatigue strong force test machine, in particular to a nine-axis linkage fatigue strong force test machine and a test method thereof. The nine-axis linkage fatigue strong forcetest machine comprises linear modules, a servo motor, a computer data processing module, a control panel, a force sensor, a left clamping device, a right clamping device and a friction rubber roller,wherein three groups of linear modules are arranged and respectively a left side linear module, a middle linear module and a right side linear module; through being driven by the three groups of linear modules, the left and right clamping devices and the friction rubber roller can do unidirectional movement, universal movement and point movement in the X, Y and Z directions. The fatigue strong force test machine provided by the invention can use the nine-axis linkage mode; the three groups of (left, middle and right) linear modules can control the left and right clamping devices and the friction rubber roller to respectively do free movement in the three-dimensional space, so that the simulation of the irregular friction of textile in the use process can be really realized; the free movement modes of clothes worn on the body and external friction articles can be simulated.