After catching a cold, there may be loss of appetite and indigestion, and hawthorn water has the function of eliminating food, so you can drink hawthorn water after catching a cold. After catching a cold, you should pay attention to eat some well-digested and nutritious food, such as vegetable and lean meat porridge, tomato and egg noodles, vegetable noodles, etc. You can also eat some fruit rich in vitamin C in moderation. You can also eat some vegetables and fruits rich in vitamin C, such as apples, bananas, oranges, dragon fruits, kiwis, spinach, lettuce leaves, cabbage, greens, etc. After cold, you should pay attention to eat some good digestive and nutritious food, such as tomato and egg porridge, vegetable noodles and so on. After a cold, you should not overeat, do not eat some spicy, stimulating, greasy, raw and cold food. After a cold, you should also pay attention to rest, drink more water, but the elderly must pay attention to a small amount of water, do not drink too much water at a time and cause heart failure.