The invention relates to a concentricity deviation warning device for an axle of an axle housing based on the Bernoulli effect. The concentricity deviation warning device structurally comprises a component mounting hole, the axle housing, spring bases and axle shaft sleeves, wherein the component mounting hole is mounted in the center of the axle housing and is of an integrated structure; two endsof the axle housing are welded to the inner surfaces of the spring bases; and the axle shaft sleeves are nested with two ends of the axle housing. When the concentricity of the axle deviates resulting in bending and rotation, the skewing of the axle causes the axle to touch deviation transmission rings and drive the deviation transmission rings to rotate, so that rubbing heating rings under the deviation transmission rings can increase the temperature of internal gas under the rotation of the deviation transmission rings and pass the thermally-expanded gas into ambient temperature chambers toheat thermistors so as to reduce the resistance; and therefore, electrical circuit lines connected to the thermistors are electrified, and the concentricity deviation warning for the axle of the axlehousing is started to remind an owner to repair the axle in time so as to prevent the bent axle from continuing to damage the axle shaft sleeves resulting in permanent damage beyond repair.