The invention discloses a labyrinth seal experiment device with an eccentric adjusting function. The labyrinth seal experiment device comprises the components of a rotating shaft assembly which is used for performing rotary movement; a chamber housing, wherein at least one part of the rotating shaft assembly is arranged in the chamber housing so that a chamber is formed between the chamber housingand the rotating shaft assembly, the first end of the chamber is sealed through a contact type sealing member, and the other end is sealed through a labyrinth sealing ring; an eccentric adjusting system which is arranged at the second end of the chamber and is used for adjusting the eccentric amount of the labyrinth sealing ring; an air inlet which is used for inputting pressure gas into the chamber; and an air outlet which is used for collecting gas that leaks from the second end of the chamber. The labyrinth seal experiment device can utilize the labyrinth seal ring in one specification forperforming experiments in a concentric condition and an eccentric condition, thereby conveniently researching an effect of an eccentric gap to leakage amount through experiments, and facilitating sealing mechanism researching of the labyrinth seal.