The invention relates to a large traction wriggling propulsion micro-pipeline robot which comprises a first supporting mechanism, a second supporting mechanism and a telescopic driving device arranged between the first supporting mechanism and the second supporting mechanism; wherein, the first supporting mechanism comprises a first tension rod, a first supporting seat and a first supporting wheel set; a first guide hole which is corresponding to the first supporting wheel set is arranged on the first supporting seat, the first supporting seat is sheathed outside the first tension rod which is formed by a first taper section, a first thread section and a first sliding bar section; the smaller diameter end of the first taper section is connected with the first thread section, and the bigger diameter end thereof is connected with the first sliding bar section; the first thread section is connected with the telescopic driving device, the first thread section is provided with a first tension nut, a first compression spring is arranged between the first tension nut and the first supporting seat, the first supporting wheel set is connected with a first supporting wheel set support pole, and the first supporting wheel set support pole passes through the first guide hole and is contacted with the first taper section. The robot has the advantages of high load capacity, strong adaptive capacity for the pipe diameter change and better passing through capacity of a bent pipe and a U-shaped pipe.