To provide a simple manufacturing method of a silicone adhesive that does not contain an aromatic hydrocarbon-based solvent and can prevent the effects of residual and volatilized substances on the human body and skin irritation, and has reduced the content of residual silanol groups. It has the first step of mixing (A) polydiorganosiloxane and (B) organopolysiloxane in the presence of an alkaline catalyst, and the molar ratio of R 13 SiO 0.5 unit/SiO 2 unit is 0.5 ~1.5, and (C) aliphatic hydrocarbon solvent； and the second step, by treating the product obtained in the above first step with an organic disilazane compound and/or silane compound, and generating the solid form after the treatment The content of silanol groups in the product is reduced to the range of 0.002 to 0.03 mol/100 g of the solid product after treatment.提供一種不含有芳香族烴基溶劑、且能夠防止由殘留‧揮發的物質對人體的影響以及對皮膚的刺激，並已降低殘留矽烷醇基含量的矽酮黏著劑的簡便的製造方法。其具有：第一步驟，在鹼性催化劑存在下，混合（A）聚二有機矽氧烷、（B）有機聚矽氧烷，其R13SiO0.5單元/SiO2單元的摩爾比為0.5~1.5、以及（C）脂肪族烴溶劑；和第二步驟，藉由用有機二矽氮烷化合物和/或矽烷化合物去處理由上述第一步驟所得到的生成物，並將處理後的固形生成物中的矽烷醇基含量降低至0.002~0.03摩爾/處理後的固形生成物100g的範圍。
