Lily, as a common flower plant, has no direct harmful effect on human body. Lily's petals and stamens will not cause allergic reactions, because its pollen quantity is small and rarely enters the human respiratory system. The petals and stamens of lily flowers are non-toxic and will not cause poisoning or other adverse reactions after ingestion or contact. Lily is also considered safe to eat and used as a medicinal plant in some places. However, some people will have allergic reactions.

If an individual is allergic to pollen or plants, contact with lilies will cause allergic symptoms, such as nasal congestion, cough and itchy skin. Therefore, people with allergies should take corresponding protective measures when contacting lilies or other flowers and plants, such as wearing masks or gloves to avoid direct contact with pollen or plants.