Abstract: A hydraulic brake controller does not only dispose a first oil-return hole, which is connected to an oil storing space, at a stroke place of allowing a piston to reciprocate in a main oil cylinder, but also disposes a regulating screw, which stretches the first oil-return hole, on a controller main body. The speed of returning hydraulic oil to the oil storing space can be controlled by simply changing the degree of the regulating screw stretching the oil-return hole so that time of allowing the piston passing through the oil-return hole to completely impose the braking force on the brake pad can be extended or reduced, thereby achieving a goal of conveniently regulating the braking sensitivity.