The invention discloses a recombinant human
interleukin-1
receptor antagonist in-situ gel, which comprises a recombinant human
interleukin-1
receptor antagonist and an in-situ gel material, wherein the in-situ gel material is one or more of a temperature-sensitive in-situ gel material, a pH-sensitive in-situ gel material and an
ionic strength-sensitive in-situ gel material. The in-situ gel is flowable liquid at
room temperature, has the advantages of easy access (injection,
eye drop, nasal drop, spray,
lung inhalation and the like), accurate dosage, and capacities of forming high-
viscosity hardly flowing gel in short time when contacting tissues, prolonging the
residence time in the tissues, increasing the medicament adsorption and fully exerting medicinal effects. The in-situ gel has the advantages of adhesiveness, slow release, and capacities of greatly improving the medicinal
bioavailability and achieving possible sustained-release long-acting effect.