The hydrography and circulation in Arctic Ocean are significantly influences surrounding rivers, but the biogeochemical (BGC) inputs from rivers and coastal erosion have been missed by most previous climate models. Here three E3SM v2 G-case simulations with monthly climatology of carbon and nitrogen input from arctic rivers and coastal erosion are conducted to validate the physical and BGC model results with observations, and evaluate the influences of river and coastal erosion input on the arctic primary production and spatial distribution of other BGC tracers.