Silica-containing modified natural rubber latex, silica-containing modified natural rubber material, and method for producing same

Provided are: a silica-containing modified natural rubber latex that can produce a rubber product having high strength; a silica-containing modified natural rubber material; and a method for producing same. The silica-containing modified natural rubber latex is produced by adding a vinyl monomer having an alkoxysilane to a natural rubber latex, causing graft co-polymerization of the vinyl monomer to natural rubber particles, and generating silica by means of the hydrolysis and condensation of the alkoxysilane. The silica-containing modified natural rubber material is produced by solidifying the silica-containing modified natural rubber latex. The silica-containing modified natural rubber material results from the natural rubber particles being dispersed in a matrix comprising graft chains containing the generated silica.