The right to a fair trial, article 14 of the International Covenant on Civil and Political Rights, can be said as the most closely connected article with domestic criminal procedure. After "Act to Implement the International Covenant on Civil and Political Rights and the International Covenant on Economic, Social and Cultural Rights (hereafter the two Covenants)" promulgated in 2009, human rights protection provisions in the two Covenants have domestic legal status. With regard to the interpretation of the Covenants, Art. 3 of the Act, applications of the two Covenants should make reference to their legislative purposes and interpretations by the Human Rights Committee, and since the interpretations made by European Court of Human Rights were frequently referred to Human Rights Committee, the article also takes a notice of the judgments and decisions from the Court. This article pays attention to the statutes of ICCPR and its concluding observations which closely related to criminal procedures so as to examine the judicial practice on its implementations. Aiming at examining domesticalization of international human rights instruments, the article focuses on three topics: 1. Preliminary hearing by the press and presumption of innocence; 2. Cross-examination and exceptions of corss-examination; 3. The ex parte verdict that order the defendant to leave the court and examine separately. Each of the three topics will be analyzed in the light of its theoretical and practical aspect and finishes with a separate conclusion.