The invention relates to a tea bag for preventing COVID-19 and a preparation method of the tea bag. The tea bag comprises flos lonicerae, herba pogostemonis, bulbus lilii, poria cocos, herba menthae, folium mori, semen phaseoli and radix ginseng. The preparation method comprises the following steps: taking the flos lonicerae , crushing or chopping the flos lonicerae, simultaneously screening the crushed or chopped flos lonicerae by using a 10-mesh screen and a 50-mesh screen, and taking powder between the 10-mesh screen and the 50-mesh screen; and treating other seven medicinal materials in the same way, respectively taking the following components in parts by weight according to the prescription: 2-8 parts of the flos lonicerae, 1-6 parts of the herba pogostemonis, 2-8 parts of the bulbus lilii, 3-10 parts of the poria cocos, 1-6 parts of the herba menthae, 1-5 parts of the folium mori, 2-8 parts of the semen phaseoli and 2-9 parts of the radix ginseng, uniformly mixing the medicinal materials, filling coarse powder into a filter bag of the tea bag, and sealing the filter bag of the tea bag. According to the tea bag disclosed by the invention, the medicinal materials are combined, the effects of clearing damp and promoting diuresis, eliminating dampness with aromatics, clearing away heat and toxic materials, dispelling wind and heat, moistening the lung and tonifying deficiency can be achieved, discomfort such as fever and headache, chest distress and cough and asthma and pharyngalgia can be alleviated in a targeted manner, the tea bag is sweet in taste and aromatic in smell, the soup color is as tea, and the tea bag does not impair the stomach and has excellent prevention and health care values.