The biodegradable components in drug management include: (1) a mixture of copolymers of at least three different blocks, a. The copolymers of each block are: (a) a biodegradable copolymer with formula: a7515a-b695a-a739a is polyester, B is polyethylene, V and X are 1 to 3000 to w repeat units, i.e. repeat units are 3 to 300 to v = x or V = x；O (b) a biodegradable copolymer, the formula of which is c6966-a7611a, wherein a is polyester, C is polyethylene of protected extreme, e and Z are the number of repeating units, in the range of 2 to 250 to Z, in the range of 1 to 3000； and the mixture includes at least 1 (a) and 1 (b)；And the weight ratio between (a) and (b) is 1:19 to 5:1； and (II) at least one pharmaceutical active ingredient. 6. Claim 6: according to any one of the above requirements, a biodegradable component of the drug, characterized in that the component also includes: (a) a biodegradable copolymer with the formula: pla7515 Pegg 695-pla739v, wherein V and X are the number of repeating units； 3 to 300 to v = x or v 1 x in the range 1 to 3 000 to W；Y / O (b) a biodegradable copolymer coating, the formula is: mpeg6966-pl 7611y, where y and Z are the number of repeating units, ranging from 2 to 250 to Z, ranging from 1 to 3000. 7. Claim 7: a biodegradable component for the use of a drug according to any one of the requirements of items 1 to 6, which is characterized by: (a) a biodegradable copolymer with a formula: pla7515-peg695-pla739v, wherein V and X are the number of class 1 to class 1 repeat units； And 3000 and W are the number of repeating units in the range 3 to 300 to v = x or v 1 x； and (b) 2,Three or four different biodegradable diode copolymers, each of which has a formula: MPEG 696-pl 7611a, where y and Z are the number of repeating units, ranging from 2 to 250 to Z, ranging from 1 to 3000； the weight ratio (a) and (b) is 1:19 to 5:1. 8. Claim 8: any one of the drugs described in claims 1 to 7 uses biodegradable ingredients,The characteristics in
