The invention relates to the field of
immunology, and particularly discloses a
mucosal immunity preparation capable of resisting infection and tumors. The effective component of the preparation is a
mucosal immunity substance which is formed by combining polyinosinic acid-polycytidylic acid, a non-antibiotic amino compound,
metal positive ions, and PEG and / or PEI and / or
PLGA and / or positive
ion polymers through
hydrogen bonds and other chemical bonds. The preparation is a spray or an
aerosol in
dosage form, but preferentially, the preparation does not contain ingredients utilized by common sprays or ingredients utilized by aerosols, and propellants. The
mucosal immunity preparation can achieve the slow-release function partially or wholly, the half-life period of the mucosal
immunity preparation is prolonged, the availability and effectiveness of drugs are improved, and the compliance of a patient is improved. The mucosal
immunity preparation can promote mucosal
immunity of the
human body by means of the mucosal immunity, and then promote activation and proliferation, including whole-body nonspecific immunity,
humoral immunity and
cellular immunity, of all immune cells instead of only acting on the local part of a
disease wound, and thus the preventing and treating effects of resisting infection and tumors are achieved.