A paste composition comprising at least: an organopolysiloxane polymer obtained by an addition polymerization of a polysiloxane mixture containing: (i) one or more organohydrogen polysiloxane shown by the following general formula wherein each R 1 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, wherein each of the "a" and "b" represents an integer satisfying a≥1 and b≥0; and (ii) one or more organopolysiloxane having an aliphatic unsaturated group and shown by the following general formula; wherein each R 3 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, and each R 4 may be the same or different and represents a monovalent hydrocarbon group having 2 to 8 carbon atoms and containing an aliphatic unsaturated group at its terminal, wherein each of the "e" and "f" represents an integer satisfying e≥1 and f≥0; wherein 60% or more by mass relative to the total mass of the polysiloxanes shown by the general formulae and is at least two kinds of the polysiloxanes satisfying any of (a+b)≥30 and (e+f)≥30, with the amounts thereof, and at least one oil material that is a liquid at 25°C, selected from a silicone oil, a hydrocarbon oil, an ester oil, a natural plant and animal oil, and a semi-synthetic oil. an organopolysiloxane polymer obtained by an addition polymerization of a polysiloxane mixture containing: (i) one or more organohydrogen polysiloxane shown by the following general formula wherein each R 1 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, wherein each of the "a" and "b" represents an integer satisfying a≥1 and b≥0; and (ii) one or more organopolysiloxane having an aliphatic unsaturated group and shown by the following general formula; wherein each R 3 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, and each R 4 may be the same or different and represents a monovalent hydrocarbon group having 2 to 8 carbon atoms and containing an aliphatic unsaturated group at its terminal, wherein each of the "e" and "f" represents an integer satisfying e≥1 and f≥0; wherein 60% or more by mass relative to the total mass of the polysiloxanes shown by the general formulae and is at least two kinds of the polysiloxanes satisfying any of (a+b)≥30 and (e+f)≥30, with the amounts thereof, and (i) one or more organohydrogen polysiloxane shown by the following general formula wherein each R 1 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, wherein each of the "a" and "b" represents an integer satisfying a≥1 and b≥0; and (ii) one or more organopolysiloxane having an aliphatic unsaturated group and shown by the following general formula; wherein each R 3 may be the same or different and represents a monovalent hydrocarbon group having 1 to 8 carbon atoms and not containing an aliphatic unsaturated group, and each R 4 may be the same or different and represents a monovalent hydrocarbon group having 2 to 8 carbon atoms and containing an aliphatic unsaturated group at its terminal, wherein each of the "e" and "f" represents an integer satisfying e≥1 and f≥0; wherein 60% or more by mass relative to the total mass of the polysiloxanes shown by the general formulae and is at least two kinds of the polysiloxanes satisfying any of (a+b)≥30 and (e+f)≥30, with the amounts thereof, and at least one oil material that is a liquid at 25°C, selected from a silicone oil, a hydrocarbon oil, an ester oil, a natural plant and animal oil, and a semi-synthetic oil.