Gulf of Alaska (GoA) is an important area to study interaction between global climate change and subsequent tectonic processes. Because of no intervening basins lies between GoA and the source (Mt. St. Elias),GoA provides unmixing signals to reveal history of source to sink. Integrated Ocean Drilling Program (IODP) Expedition 341 drilled 5 sites in the GoA in 2013, which were designed in a cross-margin transect from the continental shelf to distal Surveyor Fan. In this study, we present a comprehensive magnetic study of the distal site U1417 (56.57°N,147.60°W) with water depth of 4200m. The spliced core U1417, with a whole length of 191.94m CCSF-B (an additional depth scale) and an overall recovery rate of 70.1%,was constructed from Holes U1417A to U1417D. 323 discrete samples of Site U1417 were undertaken for rock magnetism and paleomagnetism analysis. Rock magnetic studies (including temperature-dependent curves of magnetic susceptibility, hysteresis loops and isothermal remanent magnetization) indicate that the main magnetic mineral in the sediments is magnetite with lower coercivity and no appearance of hematite or greigite. Day-Plot demonstrates that all the analyzed samples are dominated by pseudo-single domain (PSD) magnetic grains. Thus reliable paleomagnetic results are available. Inclinations of characteristic remanent magnetization after alternating-field demagnetization reveals 4 normal inclination zones and 3 negative inclination zones in this site. Using anisotropy of magnetic susceptibility (AMS), we evaluated the disturbance of all the discrete samples, and then partly modified the shipboard paleomagnetism interpretation of Cobb Mountain excursion. With the help of shipboard data and AMS, we are aware of some perturbed samples shown in Matuyama-Brunhes boundary (M/B: 0.78Ma) and then redefine M/B boundary at depth of 110.46m of the core. Meanwhile, the records of the Jaramillo subchron (0.99~1.07Ma), Cobb Mountain excursion (1.22~1.24Ma) and an incomplete Olduvai subchron (1.77 ~1.90Ma) are found at the depth intervals of 113.28~139.91m,158.41 ~162.76m and 182.67 ~191.94m, respectively. The basal age of the core are extrapolated to be about 1.9Ma. Similar with ODP Site 887,an age-depth model indicates an abrupt change in the sedimentation rate at the age of 1.2Ma (ca. 160m),the sediment rate goes down from more than 10cm/ka (after the transition, 0~162.73m) to 4.08cm/ka (before the transition, 162.73~191.94m). Combining with the IODP 341 preliminary report and multichannel seismic transect results, we conclude that abrupt change should be in connection with the enhanced glacial erosion caused by the Mid-Pleistocene transition (MPT) in the provenance area. All in all, our results provide a robust framework for further stratigraphic subdivision and correlation of this area since the Pleistocene.