Objective To study the relationship between bioelectrical impedance phase Angle PA and nutritional status in elderly patients with hypertension and to explore the feasibility of assessing the nutritional status of patients. Method A total of 415 elderly hypertensive patients admitted to the First People′s Hospital of Lianyungang from January to December 2021 were enrolled. General data collection nutritional risk screening nutritional assessment anthropometry body composition analysis and blood biochemical examination were performed. Using a case-control study the patients were divided into normal PA group and low PA group according to phase angle. The relationship between PA and nutrition related indexes were analyzed. Result The nutritional risk and proportion of malnutrition in low PA group were higher than those in normal PA group P< 0. 05 . Body weight body mass index upper arm circumference waist circumference hip circumference diastolic blood pressure grip strength walking speed skeletal muscle mass percentage of body fat appendicular skeletal muscle mass ASM appendicular skeletal muscle mass index ASMI hemoglobin albumin total cholesterol triglyceride and low density lipoprotein cholesterol in low PA group were all lower than those in normal PA group P<0. 05 . Correlation analysis showed that PA was negatively correlated with body fat percentage r = -0. 321 P<0. 05 and positively correlated with body weight r = 0. 231 body mass index r = 0. 132 upper arm circumference r = 0. 381 hip circumference r = 0. 135 grip strength r = 0. 274 walking speed r = 0. 192 skeletal muscle mass r = 0. 499 ASM r = 0. 464 ASMI r = 0. 562 hemoglobin r = 0. 316 albumin r = 0. 163 and triglyceride r = 0. 105 P< 0. 05 . Low PA was significantly associated with nutritional risk and degree of malnutrition P < 0. 05 . Conclusion Phase angle is an effective index of nutritional status in elderly hypertensive patients and has potential clinical application value in nutritional screening and evaluation of elderly hypertension patients.