The invention relates to the technical field of surface water intake, in particular to a flood land water intake structure and technology for a seasonal shallow river. The water intake structure is arranged beneath the earth surface and comprises seepage channels, a water inlet pipe, a water collecting pipe, a water collecting well, a grit basin, an inspection well, a suction well and a lift pump; normal operation of the seepage channels in the flood season is strictly ensured; when a proper position does not exist, the water intake structure can be arranged on the flood land; the water intake technology comprises the steps of water intake via the seepage channels (includes filtering with a filler), degritting via the grit basin, lifting, swirling degritting, filtering with fiber balls and filtering with sintered tubes; the problem of the flood land water intake technological process for the seasonal shallow river is solved, the water quality is ensured, and the operation is reliable.