By analyzing the validity of the question formulation of the interview "Are You Happy?" conducted by CCTV correspondents on streets in the later half of the year 2012, this paper opines that the validity of the yes - no question ended in a "ma" character is evidently affected by the context and that a question won' t be effective and objective until the question' s confirmedness degree is 0.5 and its inquiry degree 1 and guess degree 0. Moreo- ver, the paper analyzes such factors of validity as the sentence stress, the focus location, th...