(1)Objective.To study the antihyperglycemic effect of San-ye insect tea and Siebold crabapple(leaves of Malus Sieboldii R) on diabetic rats induced by streptozotocin (STZ) (2) Methods.The STZ-induced diabetic rats were randomly divided into four groups and were given normal saline, Metformin, SIT and SC respectively once a day.After two weeks, the levels of serum glucose, serum INS and lipid were assayed.(3)Result.SIT and SC could reduce the levels of serum glucose, TC ,TG and LDL-c significantly, increase the contents of serum INS and HDL-...