A rail transit turnout system, charactered by comprising: a base rail beam fixedly supported by a plurality of base pier columns arranged at intervals; a turnout beam having a first end and a second end opposite to each other, wherein the first end of the turnout beam is provided on a first transition pier column and is rotatably connected to the first transition pier column through a center pin , the center pin is arranged vertically, and the second end of the turnout beam is provided on a second transition pier column and is capable of traveling on the second transition pier column ; and branch rail beams , wherein there are at least two branch rail beams, the branch rail beams are fixedly supported by a plurality of branch pier columns arranged at intervals, and each of the branch rail beams has a first end and a second end opposite to each other, the turnout beam is arranged between the base rail beam and the branch rail beams , the first end of the turnout beam docks with an end of the base rail beam facing the turnout beam , the second end of the turnout beam operatively selects to dock with a first end of one branch rail beam among the branch rail beams , and the second end of each branch rail beam extends in a direction away from the turnout beam , characterised in that the first transition pier column is provided with two compensation assemblies, the two compensation assemblies are oppositely disposed on two sides of the turnout beam , and each compensation assembly comprises at least one compensation device , the compensation device has an output part, and the output part of the compensation device is operatively inserted into a gap between the first end of the turnout beam and the end of the base rail beam facing the turnout beam . a base rail beam fixedly supported by a plurality of base pier columns arranged at intervals; a turnout beam having a first end and a second end opposite to each other, wherein the first end of the turnout beam is provided on a first transition pier column and is rotatably connected to the first transition pier column through a center pin , the center pin is arranged vertically, and the second end of the turnout beam is provided on a second transition pier column and is capable of traveling on the second transition pier column ; and branch rail beams , wherein there are at least two branch rail beams, the branch rail beams are fixedly supported by a plurality of branch pier columns arranged at intervals, and each of the branch rail beams has a first end and a second end opposite to each other, the turnout beam is arranged between the base rail beam and the branch rail beams , the first end of the turnout beam docks with an end of the base rail beam facing the turnout beam , the second end of the turnout beam operatively selects to dock with a first end of one branch rail beam among the branch rail beams , and the second end of each branch rail beam extends in a direction away from the turnout beam , characterised in that the first transition pier column is provided with two compensation assemblies, the two compensation assemblies are oppositely disposed on two sides of the turnout beam , and each compensation assembly comprises at least one compensation device , the compensation device has an output part, and the output part of the compensation device is operatively inserted into a gap between the first end of the turnout beam and the end of the base rail beam facing the turnout beam . <EOS>