The modern lawyer system should at least be traced back to ancient Rome and even ancient Greece. The ancient Romans formulated a complicated written code and litigation system, including the defense lawyer system, which was inherited by the modern western legal system. Because the city-state society attached great importance to the rule of law and procedural guarantees, lawyers in ancient Rome enjoyed a very high status, often represented the parties in litigation with their opponents or the government, and emphasized the training of rhetoric and eloquence, which was in the same strain as Greece. Many members of the Senate have done this, the most famous of which is Cicero, a famous Roman politician.

Lawyers originated in ancient Rome. * * * The lawsuit against Rome (5 10 BC or 509-30 BC) must be conducted according to the notice and legal procedures of the consul or legal officer. Due to the increasing number and complexity of laws and notices, the parties need the assistance of people familiar with the law in litigation, especially in court debates. Therefore, from the end of the * * * system to the beginning of the imperial system (BC 1 the second half of the century), garrison troops appeared.

By the end of the 5th century, defenders must study law and obtain qualifications in major cities. They gradually formed an industry, formed their own professional groups and became full-time lawyers.

During the feudal period, most countries abolished the ancient debate litigation and changed it to the inquisition, which made lawyers useless. Some countries, such as France in the early Middle Ages, retained the lawyer system, but it was mainly applicable to religious courts, and the position of lawyer was held by monks. Secular courts sometimes allow defense, but only monks can perform this function.

After12nd century, French secular courts prohibited monks from acting as defenders, and they were replaced by professional lawyers who had received feudal legal education and were sworn in by lawyers, but their authority was greatly restricted or even invalid.