Cytokine adsorbent sheet, manufacturing method thereof and blood filter using the same

A cytokine adsorbent sheet, in the present invention, comprises a nanofiber web which is formed by electrospinning an adsorbing material capable of adsorbing the cytokine and a spinning solution of a high molecular substances mixture available for electrospinning. The cytokine adsorbent sheet may prevent elution of adsorbent due to blood.