u03b5 caprolactone dissolved to hexafluoro isopropyl alcohol or dichloromethane the ratio of the two polymers can be 50 50 30 70 or 70 30 as a copolymer the number average molecular weight is 150 000 500 000 when blending is needed the hydrophobic solution can be added with 0 01 3 antibiotic solution and or with 0 001 3 medicine for hemostasis and anti adhesion together with the solution of poly l lactide plla and u03b5 caprolactone the final solution will be obtained according to another embodiment of the invention the solution of hydrophilic polymer can choose hydrophilic polyurethane plus natural gelatin chondroitine sulfate or polyethylene glycol as solvent s the mass ratio is 20 80 80 20 the spinning solution accounts for 3 15 of total weight in blending the solution of hydrophilic polymer can be added with a solution of basic fibroblast factor and make the concentration of cytokine of 0 001 0 5 a medicine added in blending or bio printing can choose in accordance with the actual situation antibiotic or drug for hemostasis or anti adhesion in the transplantation of dura mater due to tumor excision the drugs for chemotherapy of brain tumor can be added an antibiotic includes but not limited to the cephalosporin ampicillin spiramycin sulfonamides and quinolones the first choice is ceftriaxone sodium.