Abstract: A baby carriage which can be used not only as a two-wheel-steered baby carriage but also as a four-wheel-steered baby carriage whose front and rear wheels can be swung to steer the carriage. Brackets having slender horizontally extending through-holes, through which the rear axle of the baby carriage extends so as to be swingable along the holes, are attached to the lower ends of right and left rear legs and are secured to a coupling plate extending from one of the brackets to the other. The rear axle has a length such that the axle extends from one of the brackets to the other. The rear axle is pivotally supported at the longitudinally central portion of the axle by the coupling plate so that both ends of the axle extending through the slender horizontally extending throughholes of the brackets at the ends of the axle can be swung in mutually different directions. The rear wheels are attached to the rear axle at both ends thereof. Swinging of the rear axle can be freely prevented by the brackets.