Objective To study the causes and countermeasures of adverse reactions in patients with malignant tumor after treatment with cytokine-induced killer(CIK) cells.Methods Clinical manifestations,laboratory findings,treatment measures and causes of adverse reactions in 730 patients with malignant tumor after treated with CIK cells from March 2008 to October 2012 were retrospectively analyzed.Results The main adverse reactions after infusion of CIK cells were fever(6.85%),rash(1.64%),digestive discomfort(0.96%),...