The invention discloses a splicing type vibration-damping lead wooden frame used in an oil-immersed transformer, which comprises cross beams fixed on an upper transformer clamping plate and a lower transformer clamping plate and a longitudinal beam used for fixing the lead, wherein the two ends of the longitudinal beam are respectively connected with the two cross beams through tenon and an mortise structures. A certain gap is arranged between the tenon and the mortise in the mortise and mortise structure, and the gap is filled with an elastic sealing glue after curing. Through the non-rigid connection of the tenon and mortise structure, the vibration of the transformer can be buffered, and the effect of damping and noise reduction is realized on the basis of meeting the lead supporting function.