Th2-migration promoters for helper T cells characterized by containing W/O (water-in-oil type) emulsions containing various antigens which are developed based on a finding that the migration of helper T cells into Th2 can be promoted by the oral (or transmucosal) administration of various antigens in the form of W/O emulsions. These preparations are useful in treating various diseases wherein the Th1/Th2 balance of helper T cells participates, for example, autoimmune diseases and allergic diseases.
