Turkish (Türkçe or Türkiye Türkçesi) is one of the languages of the southwest branch or a group of Oghuz Turkic languages and is the official language of Republic of Turkey. Azerbaijani is a language branch of the family of Turkic languages, and the language of Azari people in southwestern Asia, primarily in Azerbaijan and Azerbaijan of Iran and in Republic of Azerbaijan which is the official language there. In this paper, we adopt Hagstrom (1998) and Aygen (1999) to account for Turkish facts about the Q-particle. Evidence is presented from of Turkish and Azari Turkish and these are compared. It is a parameter. Turkish is a wh-in-situ language. It means Wh- is not forced to move in them. There is a null-Q in it which appears as a morpheme in yes/no and echo questions. The distribution of the Q-Particle will be given in (I); the problem of analyzing embedded questions in these two languages (II); similarities and differences of Q-Movement and wh- questions in them.

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