Lecithin was extracted fron soybean phospholipid by the method of solvent extraction. All kinds of factors which affect the vield of lecithin wer studied. The best tecnological Parameter was obtaied.

• 利用溶剂萃取法从大豆粗磷脂中提取得到了天然食品乳化剂卵磷脂，研究了影响卵磷脂得率的各种因数，得到了最佳工艺参数。