The invention discloses a tyre uniformity detection apparatus which comprises two parts: a mechanism structure and a testing system. The mechanism structure comprises a frame part, a pneumatic part, a feeding mechanism, a load wheel shaft and its attached components, a transmission mechanism as well as a tyre shaft and its attached components. The testing system comprises an upper two-dimension mechanical senor, a lower two-dimension mechanism sensor, a voltage amplifier, a data collection card and a general PC machine. The tyre uniformity detection of the invention utilizes such a detection system in which the tyre and the load wheel act on each other and the tyre uniformity can be reflected through the measurement of the support counter force of the load wheel. The tyre transmission shaft motor drives the system to rotate and the load wheel is passively driven. The support of the load wheel is provided with two two-dimension mechanism sensors, through which the force can be detected that generates the unevenness of a tyre and the uniformity degree can be reflected. In the invention, the upper sensor and the lower sense are used to measure the counter forces in the vertical direction and the horizontal direction of the tyre, and the measured forces are then transmitted to the PC machine for data processing and parameters solving through a system testing hardware circuit.