The pressure compensating dripper has a labyrinth runner, a scientific structure, stable quality of the silicone sheet, and good pressure compensating effect; The pressure compensating dripper comes with an extra-long filtered water inlet, which has good anti-clogging performance and long service life; Anti-siphon mechanism prevents sediment and other debris from being sucked back into the dripper when the system is shut down, and can be used for underground irrigation; The pressure compensating dripper has small manufacturing deviation, uniform water output, and long laying length.