1. Pesticide residues: In the process of planting, some farmers will overuse pesticides, resulting in pesticide residues in sprouts, which has potential risks to human health.

2. Water quality problem: Buds need a lot of water, and the use of water with poor water quality will affect the quality and safety of buds.

3. Seed quality: The quality and nutritional components of sprouts are affected by seed quality. Using inferior or transgenic seeds will affect the quality and safety of sprouts.

4. Growth environment: The growth environment of the sprouts should be kept in suitable conditions such as temperature, humidity and oxygen content. Improper growth environment will affect the quality and safety of the sprouts.