PROBLEM TO BE SOLVED: To stably maintain a wound to a humid level wherein the function of a liquid factor in an exuded liquid is maintained while suppressing the physical stimulation to the wound.SOLUTION: A high osmotic pressure substance 3 is applied and fixed to the wound B1 so that an intensive material 1 having a smooth shape comes into contact with the wound B1 to deform the intensive material 1 along the wound B1 to bring both of the intensive material 1 and the wound B1 to a surface contact state while transmitting the moisture contained in the exuded liquid such as the viscous liquid or blood discharged from the wound B1 through the intensive material 1 by the osmotic pressure of the wound B1 and the high osmotic pressure substance 3 to absorb the same by the high osmotic pressure substance 3. However, since a living body component such as the liquid propagating factor or the like inclusive cells or cytokine contained in the exuded liquid is not absorbed, the wound B1 is held to humid environment not inhibiting the activity of the liquid factor.