The invention discloses a novel taxol lipid 
microsphere injection containing amphiphilic 
polyamino acid and a preparation method thereof. The injection contains taxol, amphiphilic 
polyamino acid, oil for injection, an emulsifying agent, an auxiliary emulsifying agent, a potential 
regulator, an 
antioxidant, a 
metal chelating agent, an iso-osmotic adjusting agent and water for injection, wherein the amphiphilic 
polyamino acid is a segmented 
copolymer consisting of a hydrophilic 
chain segment and racemic hydrophobic polyamino acid. The novel taxol lipid 
microsphere injection represents a microscopic structure different from that of a traditional lipid 
microsphere preparation, therefore the injection has excellent stability superior to that of the traditional lipid microsphere preparation. Inthe preparation, 
polyoxyethylene castor oil is not contained, VE (
vitamin E) is not used massively, and no 
organic solvent is introduced; in addition, the injection can tolerate thermal pressure sterilization, has the advantages of no 
irritation, 
low toxicity, good stability and low cost, and is suitable for industrial production in large scale.