A target therapy sensitizer is disclosed. The target therapy sensitizer includes rapamycin and substituted quinoline. The present invention discloses a pharmaceutical composition containing the sensitizer, a target therapy sensitization kit containing the two aforementioned compounds and a use of a combination of the two aforementioned compounds as a target therapy sensitizer as well. The application of the target therapy sensitizer, pharmaceutical composition, kit and use of the present invention is advantageous for improving the treatment effect of target therapies.一種標靶治療增敏劑,其包括雷帕黴素與奎寧衍生物。本發明另揭露一種含有上述增敏劑的醫藥組合物、含有上述兩化合物的套組及上述兩化合物之組合用於標靶治療增敏劑的用途。利用本發明之標靶治療增敏劑、醫藥組合物、套組及用途,可顯著提升標靶治療對癌症的療效。