Abstract: The Henan section of the Yellow River is predominantly a wandering river section,which has a severe impact on the river habitat due to its violent water-sediment changes,frequent main channel oscillations and severe riverbed deformation.This paper uses Landsat satel‐lite images and the MNDVI water body index to extract the river boundary information of 30 a water bodies in the wandering section of the Yellow River.By dividing different river sections and regions and calculating the main channel morphological parameters,river oscillation area,oscillation direction,migration distance and other indicators in different periods,the changing characteristics of river oscillation in the wandering section are analyzed.The results show that:the main channel water area of the wandering section is obviously reduced and trans‐formed to a curved river;the R2 area is the area with the largest oscillation area and the largest average oscillation area;the total area of oscillation to the left bank of the wandering section from 1986 to 2019 is 59.9 km~2,and the total area of oscillation to the right bank is 53.3km~2,the area of oscillation to the left bank and right bank of the R1 and R4 sections is approximately equal,the R2 section mainly oscillates to the left bank R1 and R4 sections oscillate to the left bank and right bank in roughly equal areas,R2 section oscillates mainly to the left bank,R3 section oscillates mainly to the right bank and the wandering section as a whole has a slight tendency to oscillate to the left bank;R1 area as a whole migrates slightly to the south,R2 area as a whole migrates significantly to the north,R3 area as a whole migrates to the south and R4 area as a whole migrates slightly to the west.After the operation of Xiaolangdi Reservoir,the amount of water entering the wandering section is basically the same as before the reservoir operation,while the sediment is mainly transported during the flood season;the change of the main channel of the wandering section is related to the scouring of the beach bank soil by the water and the collapse after the flood;the control and guide project has an obvious restraining effect on the river,and some sections S11 and S12 in the R3 area lack the control and guide project,and the main channel of the river wavers sharply.