The invention relates to an information collection device bracket applied to an information tracing system. The information collection device bracket comprises a bottom end fixing part, a main expanding rod and a secondary expanding device. Through improvement of the material of a first rotating shaft and a second rotating shaft, the material comprises the following components in percentage by weight: 0.016-0.038% of C, 0.3-0.5% of Si, 1.0-1.9% of Mn, 19-22% of Cr, 6.6-8.0% of Ni, 0.02-0.25% of Nb, 0.02-0.06% of RE, 0.02-0.11% of N, less than 0.01% of S, less than 0.05% of P and the balance of Fe and inevitable impurities. Through improvement of microstructure, an information collection head is capable of carrying out all-angle information collection on a production line; and an information collection device is durable and is high in fatigue resistance.