在文献基础上，通过对硅氢加成反应的探讨，阐述了硅氢自由基加成反应中硅烷自由基产生的方式，即热力引发、有机过氧化物、紫外光和γ－射线以及它们的联合使用等方法；通过例证，论述了Ｃ＝Ｃ、Ｃ≡Ｃ键在自由基加成的差别，指出在相同条件下，Ｃ≡Ｃ键比Ｃ＝Ｃ键在反应过程中出现的副反应多。 On the basis of the literature, through the discussion of hydrosilylation reaction, the ways of generating silane free radicals in hydrosilylation reaction are described, that is, thermal initiation, organic peroxide, ultraviolet light and γ-ray and their By the way of illustration, the difference of free radical addition of C = C and C≡C bonds is discussed. It is pointed out that under the same conditions, there are many side reactions of C≡C bond and C = C bond during the reaction .