The invention discloses a wheeled mobile support unit, and relates to mine mobile support equipment. The unit is used for temporary support of gob side entry retaining or work advance heading, and solves the problem that an existing mobile support equipment system is complicated and has poor adaptability. A wheel frame is added on the basis of a unit bracket, a pair of universal wheels are arranged in front of the wheel frame, and a pair of fixed wheels are arranged at the rear. The universal wheels and the fixed wheels cooperate with a sliding groove in a body of the wheel frame through a guide column, and a lifting jack fixed to an upper support frame vertically raises and lowers walking wheels; the body of the wheel frame and a support unit base are horizontally connected in the left and right directions through a push-pull jack, a walking wheel lifting state is based on the support unit to push the wheel frame, a walking wheel landing state pushes the support unit on the basis of the wheel frame, and the overall lateral movement is alternately achieved; during the long distance transportation, the walking wheels touch the ground and walk through external traction power. The unit adds the self-shifting function of a wheeled walking bracket and improves the system adaptability.