Abstract： Objective To discuss the differences of temperature,pulse,blood pressure and oxygen saturation between the paralyzed and healthy arms of elderly patients with hemiplegia.Methods 60 patients' temperature,pulses,blood pressure and oxygen saturation of healthy and paralyzed arms was monitored continuously for 30 days.Results There was no statistically significant difference in the DBP,pulse and oxygen saturation between 60 patients' healthy and paralyzed arms (P ＞ 0.05).The temperature of the healthy arm was (36.2 ±0.2)℃ and the SBP was (142 ± 13.9) mm Hg,while the temperature of the paralyzed arm was (36.1 ± 0.2) ℃ and the SBP was (125 ± 12.2) mm Hg.The differences were statistically significant (t =2.045,11.200,respectively ;P ＜ 0.05).Conclusions There is no difference in the pulse and oxygen saturation but a difference in the temperature and blood pressure between the paralyzed and healthy arms of elderly patients with hemiplegia.Thus it is suggested to measure the temperature with the healthy arm,and first measure the blood pressure of two arms,if the difference ＞ 10 mm Hg,take thc arm whose blood pressure is higher.Correct monitoring of vital signs can ensure timely and accurate treatment for the patients.