采用Lowry、氨基酸分析和原子吸收等方法分别测定蚕宝素中蛋白质、氨基酸和化学元素含量：以荷瘤、同位素掺入等技术观察蚕宝素抗肿瘤活性。结果：蚕宝素中蛋白质含量为4.03±0．15g／L；含天门冬氨酸、苏氨酸、丝氨酸、谷氨酸、脯氨酸、甘氨酸、丙氨酸、半胱氨酸、缬氨酸、蛋氨酸、异亮氨酸、亮氨酸、酪氨酸、苯丙氨酸、赖氨酸、组氨酸和精氨酸等17种；含Ca、Mg、K、Na、Cu、Zn、Fe、Ge、Cr、Se等10种元素。2．80mg／kg蚕宝素对小鼠民S180和H22移植瘤瘤重抑制率分别为41．1％和43．1％，并显著抑制RNA合成。 Lowry, amino acid analysis and atomic absorption methods were used to determine the content of protein, amino acid and chemical elements in silkworm treasures respectively. The anti-tumor activity of silkworm treasure was observed by techniques such as tumor-bearing and isotope incorporation. RESULTS: The protein content in silkworm was 4.03±0.15 g/L; it contained aspartic acid, threonine, serine, glutamic acid, valine, glycine, alanine, cysteine, hydrazine ammonia There are 17 kinds of acid, methionine, isoleucine, leucine, tyrosine, phenylalanine, lysine, histidine and arginine; Ca, Mg, K, Na, Cu, Zn, Ten elements such as Fe, Ge, Cr, and Se. The inhibitory rate of 2.80mg/kg of SNP on mice S180 and H22 tumors was 41.1% and 43.1%, respectively, and significantly inhibited RNA synthesis.