The highest administrative and judicial organs in ancient Athens were

National People's Congress: It was the organ of power in ancient Athens. During Solon's reform, the people's congress was given the power to decide the important affairs of the country, and Cristini's reform further enhanced its role. During the period of Pericles, the people's congress became the highest organ of state power. Similar to the National People's Congress.

The highest administrative organ is a parliament composed of 500 members.

The 500-member parliament is the core of the democratic political system in Athens, the ancient Greek city-state. Its duty is to implement the decisions of the citizens' assembly, and it is the highest administrative organ similar to the State Council.

The judiciary is a jury court.

There are 6,000 jury judges, who are drawn by lots by citizens over the age of 30. It is the highest judicial and supervisory body of the city-state, responsible for hearing and judging various important cases.