of mediating effect in this process. Speci⁃Р fic investment plays a nonlinear moderating effect on the relationship between R&D subsidy and technological innovation, and itsР effect intensity is u-shaped. The research results can provide important reference for the optimization of R&D subsidy policies andР the improvement of relevant supporting policies.Р 〔Key words〕 specific investment; R&D subsidy; technology innovation; high-end manufacturing; negative binomial re⁃Р gression; “U” type evolution characteristicsР 〔Jel classification〕 O14; O31Р (责任编辑: 杨 婧)Р — 100 —