数列与不等式的综合问题灵活多变、综合性强、能力要求高.在解这类问题时,往往需要将数列的通项代入要证的不等式中,而此时的“代入”显得尤为关键,需要一定的技巧而不是一味地“死代”、“硬代”.本文将举例说明这些技巧. The comprehensive problems of series and inequalities are flexible, comprehensive, and highly demanding. When solving such problems, it is often necessary to substitute the general terms of the series into the inequality of the proof, and the “substitution” at this time is particularly critical. Need a certain skill rather than blindly “dead generation”, “hard generation”. This article will illustrate these tips.