The utility model relates to the field of medical appliances, in particular to a multifunctional infusion sleeve with a shading function. The multifunctional infusion sleeve comprises an outer sleeve and a plurality of inner support sleeves. A shading roller shutter is arranged on the outer wall of the outer sleeve, the inner support sleeves can sleeve one another, the outer diameter of the largest inner support sleeve is consistent with the inner diameter of the outer sleeve, the outer diameter of the inner support sleeve on the inner side of each adjacent inner support sleeve pair is consistent with the inner diameter of the inner support sleeve on the outer side of the adjacent inner support sleeve pair, a bottleneck collar is connected into the outer sleeve by a hang rope, and corresponding hang holes are formed in the upper end of the outer sleeve and the upper ends of the inner support sleeves. The multifunctional infusion sleeve has the advantages that the shading roller shutter is arranged on the outer wall of the outer sleeve and can be folded when shading is not required, so that the multifunctional infusion sleeve can be used as a normal infusion sleeve; the shading roller shutter can be unfolded when shading is required, so that shading effects can be realized; the shading roller shutter in the design can be folded to form a gap at any time, so that internal liquid remaining conditions of infusion bottles can be observed via the gap, and infusion progress can be known.