A composition capable of inducing endoplasmic reticulum stress including nanogold particles and a solvent is disclosed. After a chronic myelogenous leukemia patient intakes the composition capable of inducing endoplasmic reticulum stress, the endoplasmic reticulum stress of the chronic myelogenous leukemia cells is induced to cause apoptosis and cell death, so as to alleviate and control chronic myelogenous leukemia.