The invention discloses a
shore type ladder-grade two-dimensional surface flow water filtering riverbed in-situ ecological remediation method. A riverbed space is utilized sufficiently, and the section of the riverbed is designed into functional regions including a central
main river tank, a ladder-grade two-dimensional surface flow base
bed, a
shore water distribution
ditch and the like in sequence from inside to outside, and a certain
water level gradient is kept. A river vertical hydraulic gradient and an upstream residual position water head are utilized to arrange facilities including a water distribution short dam and the like at an inlet end of a remediation unit; water from a riverbed upstream is distributed to the
shore water distribution
ditch and the central
main river tank according to the ratio. Water distribution weirs are uniformly distributed on the inner side of the water distribution
ditch and are used for distributing the
river water to the ladder-grade two-dimensional surface flow base
bed; the
river water flows through the ladder-grade base
bed in a manner similar with a transverse flow regime vertical to a
central line; the base bed is internally filled with substances and aquatic plants are planted to establish a complete ecological
system; meanwhile,
water quality is strengthened and purified and a river ecological
system is remediated; the water discharged from the base bed is collected to the central
main river tank so that the in-situ ecological remediation of a shore type ladder-grade two-dimensional surface flow water filtering riverbed of one unit is finished.