Photos show wireless devices disguised as watches, belts and erasers.
This year 9.4 million students are taking the exam dubbed one of ‘the world’s most difficult examinations.’
Photos show the attempts made by past students to cheat during the college entrance exam.
The cheating devices were shown off to Chinese media on June 6.
With the watch, pupils would take pictures of the tests using a button-hole camera hidden in the device. Then there would be a copper antenna loop stitched into their clothing to beam it out of the hall to someone sitting with a receiver.
This person would then look up the answer to the question and then send it back using a hidden earpiece.
According to police, those found cheating are stripped of the enrollment qualification for a period ranging one to three years.
Parents involved are also seriously punished.
The college examination known as the Gaokao began on June 7 and will see some 9.4 million students take the test.
However only 3.2 million students are expected to enroll in an undergraduate degree programme following the exam.
Education is highly valued in China, with many parents sending their children miles each day just to go to school, and many are afraid they will be harshly punished for failure.
Streets surrounding exam centres are cordoned off in order to keep the environment around it quiet. Police cars are on stand by to pick up students that need help or have been caught up in rush hour traffic, reports the daily online.