The utility model relates to a two-pillar shield large mining height top coal caving hydraulic upport, which comprises a base which is respectively hinged with two ends of two double-telescopic pillars and a top beam with a telescopic beam and a two-stage face guard, a front connecting rod and a rear connecting rod which are hinged between the base and the caving shield, a middle-gear thrust gear of the base, a bottom lifting system arranged on the front part of the base, side guard plates arranged on the top beam and the caving shield, a balanced jack hinged between the top beam and the caving shield, etc. The rear end of the top beam is orderly hinged with a caving shield, a tail beam which is provided with a telescopic inserting plate and is controlled by a tail beam jack. The utility model is developed by integrating the characteristics of a two-pillar large mining height shield hydraulic support and a top coal caving hydraulic support, and keeps many advantages of the large mining height support and the top coal caving support. The utility model can satisfy the one-time mining full height of a coal bed of 3.8 to 5m and can implement the top coal caving mining function of a coal bed of more than 5m.