In terms of professional technology, according to the workflow and content of criminal defense, it mainly includes the following skills: meeting, marking papers, investigating and collecting evidence, asking questions in court, cross-examining in court, debating in court, etc. At present, lawyers' criminal defense business training mainly focuses on professional and technical training to make up for the shortage of law school teaching. In the long run, it is necessary for law schools to introduce a large number of experienced judges, prosecutors and lawyers as practical professors or teachers to teach and train students' practical skills.
In terms of professional ability, four abilities are emphasized: one is legal thinking ability, including presumption of innocence thinking and critical thinking. Criminal defense lawyers should comprehensively examine and question the charges, facts and evidence accused by the prosecution with a rational and prudent attitude. The second is the ability of legal interpretation, that is, the ability to understand and apply legal provisions. Skillfully use the methods of literal interpretation, systematic interpretation, legislator's purpose interpretation, historical interpretation, comparative interpretation, etc. to make a legal interpretation in favor of the defendant. The third is the ability of evidence analysis, that is, the ability to determine the facts of a case from evidence reasoning. In particular, we should be good at extracting and recovering the evidence information that is ignored and hidden by the defendant and reconstructing and correcting the facts of the case. The fourth is the ability to demonstrate and persuade, including the ability to demonstrate, refute and use logic, as well as the ability to communicate and persuade. By weakening the prosecution's argument and finding the logical fallacy in the prosecution's argument, we can effectively refute and convince the referee to accept the defense's point of view.