High blood sugar can eat red dragon fruit, its glycemic index is low, belongs to the low sugar fruit. However, it does not have a hypoglycemic effect. Dragon fruit is a common fruit, has a high nutritional value, contains vitamin C, dietary fiber, phosphorus, iron, crude fiber, protein and other nutrients, and the glycemic index is low, belongs to the low-sugar fruits, so patients with high blood sugar can eat red dragon fruit, helps to supplement nutrition. However, if you eat a lot of red dragon fruit at one time will not be conducive to the control of blood sugar concentration in patients with high blood sugar, may also occur diarrhea, abdominal pain and other gastrointestinal adverse reactions. Consult your physician or dietitian for specific dietary combinations.