The invention relates to the technical field of soaking solutions, and discloses a soaking solution for treating onychomycosis. The soaking solution is prepared from the following raw materials: main raw materials of citronella, galla chinensis,
flos caryophylli, radix sophorae flavescentis, cortex dictamni,
rhizoma coptidis, cortex pseudolaricis and auxiliary raw materials of radix aucklandiae,
alcohol, vinegar and water; and an auxiliary device comprises a crushing device, a standing box, a decocting device, a distilling device and a
drying treatment device. According to the soaking solution for treating onychomycosis and the preparation method thereof, citronella is mixed with the galla chinensis, the
flos caryophylli, the radix sophorae flavescentis, the cortex dictamni, the
rhizoma coptidis and the cortex pseudolaricis, the citronella can provide a
beriberi removing effect on the interiors of the citronella, the galla chinensis, the
flos caryophylli, the radix sophorae flavescentis, the cortex dictamni, the
rhizoma coptidis and the cortex pseudolaricis, so that when the
medicine can be used for removing the onychomycosis, the
medicine can be driven to remove dermatophytosis, the problem that
leuconychia relapses due to infection is avoided, meanwhile, the radix aucklandiae is added, the smell of the soaking liquid can be effectively reduced through the radix aucklandiae, and the infusion property during use is improved.