Abstract: An improved shock-absorbing assembly in combination with a bicycle saddle is equipped with a pair of vibration springs having two bell-shaped portions connected end to end and a receving groove is disposed at the junction thereof. A retaining member having a loop at each end thereof is engaged with the receiving groove of the vibration springs respectively. A tong-shaped supporting arm having its end bended into a loop is engaged with the receiving groove of the vibration springs which are securedly mounted onto a pair of fixing poles by nuts and washers. The front end of the supporting arm is inserted into a locking mount secured to the front end of the underside of a saddle so that the supporting arm is easily fixed in place and is dismounted from the saddle.