What defense work do lawyers mainly do in criminal legal aid work?

1. Accept the entrustment of the parties and represent them in criminal defense within the scope permitted by law; 2. Sign a criminal defense agency agreement with the parties; 3, meet with the parties, understand the specific case, to provide advice for bail pending trial; 4. Investigate and collect evidence related to the case and defend the parties; 5. Put forward the defense opinion that the parties are not guilty or mitigated punishment to the court during the trial; 6. Acting as an agent for appeal cases, preparing appeal materials and filing a case for retrial, and participating in the defense of retrial cases; 7. Acting as an agent in criminal cases, reporting and accusing criminal acts in cases of private prosecution and public prosecution; 8. Accept the employment of relevant enterprises or state organs and various legal person organizations, and conduct training on crime prevention and criminal risk prevention and control.