The invention discloses a splicing trussed type pile leg device which comprises trussed type pile legs connected with pile shoes. Each trussed type pile leg comprises three chord members, wherein the vertical section of each chord member is distributed in an equilateral triangle shape. The outer circumferential face of each chord member is symmetrically connected with eleven racks in the axial direction, and the three vertical faces, in the length direction, of the chord members are respectively provided with at least two horizontal supporting rods which are isolated in an up-and-down mode and connected with the chord members. The splicing trussed type pile leg device comprises at least two layers, connecting positioning joints used for the chord members are arranged between the trussed type pile legs, and each connecting positioning joint is composed of a positioning column, a clamping sleeve, an elastic cushion block and a bolt pair. According to the splicing trussed type pile leg device, through reasonable subsection, ingenious design and the scientific splicing structure, an integrated self-elevating trussed type pile leg is changed to be in a splicing structure form with multiple layers, and the splicing trussed type pile leg device is simple in structure, convenient to assemble and disassemble, safe, reliable and wide in application range.