Disclosed is a Chinese herbal medicine additive for preventing swine fever, which is made of 20-50 parts by weight of wild jujube, 10-18 parts by weight of Radix bupleuri, 6-20 parts by weight of Codonopsis pilosula, 10-20 parts by weight of Lonicera japonica, 10-20 parts by weight of Radix isatidis, 4-8 parts by weight of Rhizoma anemarrhenae, 3-6 parts by weight of liquorice root, 10-20 parts by weight of Myrica rubra, and 30-60 parts by weight of cactus.Linvention concerne un additif de plante médicinale chinoise pour prévenir la peste porcine, qui est composé de 20-50 parties en poids de jujubier sauvage, 10-18 parties en poids de Radix bupleuri, 6-20 parties en poids de Codonopsis pilosula, 10-20 parties en poids de Lonicera japonica, 10-20 parties en poids de Radix isatidis, 4-8 parties en poids de Rhizoma anemarrhenae, 3-6 parties en poids de racine de réglisse, 10-20 parties en poids de Myrica rubra et 30-60 parties en poids de cactus.