Four-wheel walking aid with large front wheel and small rear wheel

A four-wheel walker with a large front wheel and a small rear wheel is provided that includes two laterally spaced front posts and two laterally spaced rear posts. The four-wheel walking aid further comprises two grounded front wheels and two rear wheels, wherein the two front wheels are mounted at the tail ends of the two front stand columns respectively; and the two rear wheels are connected to the ground, and the two rear wheels are installed at the tail ends of the two rear stand columns respectively. Wherein the two front wheels are equal in size, the radius of each front wheel is R1, the two rear wheels are equal in size, the radius of each rear wheel is R2, and R1 is larger than or equal to 3 * R2. 提供了一种具有大前轮小后轮的四轮助行器，其包括两个横向间隔的前立柱和两个横向间隔的后立柱。所述四轮助行器还包括：两个接地的前轮，两个所述前轮分别安装到两个所述前立柱的末端；以及两个接地的后轮，两个所述后轮分别安装到两个所述后立柱的末端。其中，两个所述前轮大小相等，半径为R1，两个所述后轮大小相等，半径为R2，R1≥3×R2。