Abstract: Taking cellulose (Cell) and antarctic krill protein (AKP) as the raw materials, ethylene glycol diglycidyl ether (EGDE) as the latent crosslinker, NaOH and urea aqueous solution as the solvents, Cell-AKP-EGDE composite spinning solution was prepared after dissolving Cell and AKP at low temperature. Then the spinning solution was squeezed into a coagulation bath composed of H₂SO₄-Na₂SO₄-H₂O, and the Cell-AKP composite fibers crosslinked in situ by EGDE were obtained by hot stretching. The effect of the content of EGDE on the intermolecular interaction of Cell-AKP composite system was studied by FTIR. The correlation between cross-linking agent content and the surface morphology, crystallinity, thermal stability and mechanical properties of Cell-AKP composites was investigated by SEM, XRD and TG. The results show that the apparent viscosity, mechanical properties, crystallinity and surface morphology of the Cell-AKP composite fibers are affected by the content of EGDE crosslinking agent, and the comprehensive properties of the Cell-AKP composite fibers are the best when the content of EGDE crosslinking agent is 3wt%.