The invention discloses a non-contact three-axial vibration test device and a test method thereof. The device comprises a test system base, a test chamber, vibration excitation electromagnet groups, and an auxiliary suspension system. A test piece is installed inside the test chamber and is balanced to make the overall center of mass of the test chamber located at the geometric center thereof. The whole test chamber is in a static equilibrium state under the action of the auxiliary suspension system and is located at the vibration center. Non-contact three-axial vibration is realized under the action of the electromagnetic force of the three vibration excitation electromagnet groups arranged oppositely in three orthogonal directions of the test chamber and the test system base. The dependence on a decoupling device is avoided. The device and the method are suitable for broadband vibration control.