The utility model discloses a hydraulic support of preventing a coal wall from spalling and roof falling in front of the support. The hydraulic support comprises a telescopic beam and a supporting mechanism which is arranged on the telescopic beam. The beam-end distance of the hydraulic support is less than 240mm. A gear planing used for shoveling the coal wall on the top is arranged at the front end of the telescopic beam. The supporting mechanism comprises an oscillating bar, wherein one end of the oscillating bar is hinged with the telescopic beam, and the other end of the oscillating bar is hinged with a first grade supporting plate. The telescopic beam is hinged with a line driving mechanism which drives the first grade supporting plate and abuts against the coal wall. The structure of the hydraulic support enables the first supporting plate to be contacted with a coal wall surface, so that spalling is avoided. Due to the fact that the distance between the gear planing of the telescopic beam and the coal wall is less than 240mm, so that roof falling in front of the support is avoided.