Composite algae functional microalgae bead as well as preparation method and application thereof

The invention belongs to the technical field of skin care product preparation, and discloses a composite algae functional microalgae bead as well as a preparation method and application thereof. Composite algae (including brown algae extract, red algae extract and sargassum horneri extract) from ocean are selected and matched with functional microalgae nostoc sphaeroides extract and spirulina extract, the composite algae and the functional microalgae nostoc sphaeroides extract and the spirulina extract are cross-linked with different metal ions on the basis that the composite algae and the functional microalgae nostoc sphaeroides extract and the spirulina extract are combined, and the original structure of gel is changed by cross-linking with the metal ions, so that the gel is prepared. The problems that in the prior art, calcium gel is low in mechanical strength, poor in slow release capacity, prone to being damaged and the like are solved, the functions and effects of the raw material algae and microalgae a