Longjing belongs to green tea and can be drunk in all seasons. It should be noted that improper drinking is easy to hurt the stomach. Because new tea contains more unoxidized polyphenols, aldehydes and alcohols, these substances have poor gastrointestinal function, especially for patients with chronic gastrointestinal inflammation, these substances will stimulate gastrointestinal mucosa, and people with poor gastrointestinal function are more likely to induce stomach diseases.

In addition, tea contains more caffeine, active alkaloids and a variety of aromatic substances, which will also excite people's central nervous system. Patients with neurasthenia and cardiovascular and cerebrovascular diseases should drink it in moderation, not before going to bed or on an empty stomach.