审讯是侦查人员与犯罪嫌疑人之间面对面的心理战,只有掌握犯罪嫌疑人被讯问时的心理变化规律,才能有的放矢地促进犯罪嫌疑人的思想转变,从而在审讯中掌握主动权。而犯罪嫌疑人内心思想的变化,一定在外表有所反映,因此,通过观察犯罪嫌疑人神态变化而掌握其内心真实想法对审讯策略的及时调整具有重要意义。 Interrogation is a face-to-face psychological warfare between investigators and criminal suspects. Only by grasping the law of psychological changes when criminal suspects are interrogated can we forward the criminal suspect’s thought changes with a view to taking the initiative in trial. However, the changes of inner thoughts of the criminal suspects must be reflected in the appearance. Therefore, it is of great significance to master the real inner thoughts of the suspects on the timely adjustment of the trial tactics by observing the changes of the criminal suspects’ demeanor.