The invention relates to a shock-absorbing universal wheel for a luggage. The shock-absorbing universal wheel for the luggage comprises a support, a supporting bracket, a roller and a driving support, wherein the roller is connected with the supporting bracket through a horizontal shaft; the supporting bracket and the support are connected through a vertical shaft; the upper part of the vertical shaft is fixedly connected with the support; the lower part of the vertical shaft is in rotatable fit with a shaft mounting hole formed on the upper part of the supporting bracket; a roller through hole and an installation through hole are formed in the driving support; the supporting bracket is connected with the driving support in a rotatable way through the installation through hole; the roller is connected with the driving support through a horizontal shaft which is arranged in the roller through hole; one side of the driving support, which is opposite to the roller through hole, is provided with a platform surface; and the platform surface is connected with an elastic device which stops the platform surface from moving downwards. Due to the stopping effect of the elastic device, the weight of the luggage and the acting force of the elastic device are balanced, so that the shock-absorbing effect is achieved; and the shock-absorbing universal wheel for the luggage has strong integral structural performance and excellent shock-absorbing performance, and can be interchanged with an ordinary universal wheel seat.