A method of manufacturing a silicone rubber comprising: a first stage that comprises the step of preparing an aqueous dispersion of a filler composed of 10 to 300 part by weight of water that contains a water-soluble polymer, 1 to 40 part by weight of a finely powdered silica filler, 0 to 500 part by weight of a conductive filler, and 0 to 500 part by weight of a non-conductive inorganic filler (except for the finely powdered silica filler) (where the total amount of components,, and is within the range of 1 to 500 part by weight); and the step of preparing an aqueous emulsion by stirring and mixing in an arbitrary sequence the aforementioned aqueous dispersion of a filler with the following components: 100 part by weight of an organopolysiloxane that contains in one molecule at least two silicon-bonded alkenyl groups and that has a viscosity of 100 to 500,000 mPa·s at 25°C; and a curing agent; whereby 0.1 to 10 part by weight of an emulsification agent is added in either step or, wherein the water-soluble polymer of component is selected from the group consisting of alginic acid, sodium alginate, a sodium salt of a carboxylate, a sodium salt of a carboxy cellulose; a methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, a modified starch; sodium polyacrylate; sodium polymethacrylate and the curing agent comprises a platinum-type catalyst jointly used with an organopolysiloxane having silicon-bonded hydrogen atoms and a second stage of obtaining a silicone rubber either by curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone rubber-like cured body, and then removing water from the aforementioned wet silicone rubber-like cured body; or by dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage. a first stage that comprises the step of preparing an aqueous dispersion of a filler composed of 10 to 300 part by weight of water that contains a water-soluble polymer, 1 to 40 part by weight of a finely powdered silica filler, 0 to 500 part by weight of a conductive filler, and 0 to 500 part by weight of a non-conductive inorganic filler (except for the finely powdered silica filler) (where the total amount of components,, and is within the range of 1 to 500 part by weight); and the step of preparing an aqueous emulsion by stirring and mixing in an arbitrary sequence the aforementioned aqueous dispersion of a filler with the following components: 100 part by weight of an organopolysiloxane that contains in one molecule at least two silicon-bonded alkenyl groups and that has a viscosity of 100 to 500,000 mPa·s at 25°C; and a curing agent; whereby 0.1 to 10 part by weight of an emulsification agent is added in either step or, wherein the water-soluble polymer of component is selected from the group consisting of alginic acid, sodium alginate, a sodium salt of a carboxylate, a sodium salt of a carboxy cellulose; a methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, a modified starch; sodium polyacrylate; sodium polymethacrylate and the curing agent comprises a platinum-type catalyst jointly used with an organopolysiloxane having silicon-bonded hydrogen atoms and a second stage of obtaining a silicone rubber either by curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone rubber-like cured body, and then removing water from the aforementioned wet silicone rubber-like cured body; or by dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage. the step of preparing an aqueous dispersion of a filler composed of 10 to 300 part by weight of water that contains a water-soluble polymer, 1 to 40 part by weight of a finely powdered silica filler, 0 to 500 part by weight of a conductive filler, and 0 to 500 part by weight of a non-conductive inorganic filler (except for the finely powdered silica filler) (where the total amount of components,, and is within the range of 1 to 500 part by weight); and 10 to 300 part by weight of water that contains a water-soluble polymer, 1 to 40 part by weight of a finely powdered silica filler, 0 to 500 part by weight of a conductive filler, and 0 to 500 part by weight of a non-conductive inorganic filler (except for the finely powdered silica filler) (where the total amount of components,, and is within the range of 1 to 500 part by weight); and the step of preparing an aqueous emulsion by stirring and mixing in an arbitrary sequence the aforementioned aqueous dispersion of a filler with the following components: 100 part by weight of an organopolysiloxane that contains in one molecule at least two silicon-bonded alkenyl groups and that has a viscosity of 100 to 500,000 mPa·s at 25°C; and a curing agent; whereby 0.1 to 10 part by weight of an emulsification agent is added in either step or, wherein the water-soluble polymer of component is selected from the group consisting of alginic acid, sodium alginate, a sodium salt of a carboxylate, a sodium salt of a carboxy cellulose; a methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, a modified starch; sodium polyacrylate; sodium polymethacrylate and the curing agent comprises a platinum-type catalyst jointly used with an organopolysiloxane having silicon-bonded hydrogen atoms and a second stage of obtaining a silicone rubber either by curing the aqueous emulsion prepared in the aforementioned first stage, forming a wet silicone rubber-like cured body, and then removing water from the aforementioned wet silicone rubber-like cured body; or by dehydrating and curing the aqueous emulsion prepared in the aforementioned first stage.