Free of charge, but involves a specific defense situation, then you need to pay the lawyer's fee, and entrusted to the lawyer for defense processing. Lawyer is through the legal professional qualification examination and obtain a lawyer's license according to law, accept the entrustment or designation, for the parties to provide legal services practitioners. According to the nature of work, lawyers can be divided into full-time lawyers and part-time lawyers, according to the scope of business, lawyers can be divided into civil lawyers, criminal lawyers and administrative lawyers, according to the object of service and work identity, divided into social lawyers, corporate lawyers and public lawyers. Lawyer business is mainly divided into litigation business and non-litigation business.