PURPOSE: A circuit board testing apparatus is provided to prevent a circuit board to be twisted by preventing a moving block to pressurize the circuit board to a lateral direction. CONSTITUTION: A probe part(110) comprises a plurality of test pins(114) connected to a circuit board(10). A fixing part(120) evenly fixes and supports the circuit board. The fixing part comprises a driver(124) and a moving block(122) which supports the circuit board. The moving block is faced to the side of the circuit board on the same height. The driver straightly transfers the moving block there and back. The moving block comprises a slit(123) in which the border of the circuit board is slid and inserted.
