The invention relates to a medical stone 
powder filler for cables. The medical stone 
powder filler is prepared from the following raw materials in parts by weight: 2-3 parts of 
vinyl acetate resin emulsions, 1-2 parts of 3-aminopropyl 
triethoxysilane, 0.2-0.3 part of 
tallow seed oil, 2-3 parts of 
barium oxide, 2-3 parts of N-phenyl-2-
naphthylamine, 0.2-0.3 part of 
sodium percarbonate, 0.4-0.5 parts of PVC (
Polyvinyl Chloride) paste resin, 0.2-0.3 part of triaryl 
phosphate, 0.3-0.5 parts of distearyl thiodipropionate, 75-80 parts of medical stone 
powder, a right amount of water, a right amount of 4%-6% 
hydrochloric acid and 10-15 parts of auxiliary agents. Medical stone powder is used in the filler disclosed by the invention; according to the filler, good surface hydrophobicity is achieved by carrying out organic modification on the surface, good reinforcing property is achieved due to the increase of compatibility with a cable material, and the 
toughness and tensile strength of the cable material can be enhanced; the cable material has the characteristics of 
flame resistance, acid and alkali resistance, 
microbial resistance and abrasion resistance due to the addition of the PVC paste resin; and the auxiliary agents can enhance the 
dispersity of the filler.