How to test the value of purple sweet potato and taro puree. Purple sweet potato contains a lot of dietary fiber, which can promote intestinal peristalsis, help regulate gastrointestinal flora, and promote defecation, which is beneficial to patients with constipation. Purple sweet potato also contains dried purple sweet potato, which has a significant antioxidant effect. , able to scavenge free radicals and delay aging. Purple sweet potato can also regulate immunity and have anti-cancer and anti-cancer effects. The glycoprotein contained in purple sweet potato has a protective effect on cardiovascular. It can prevent fat accumulation and hardening of blood vessels. From these aspects, its value is very great.