The invention belongs to a rotary table bearing, and especially relates to a rotary table bearing with an angle measure system. The bearing which comprises a gasket of the rotary table bearing is characterized in that the outer periphery clinging to the gasket of the rotary table bearing is connected with a steel grid ruler through a front edge or a step, the outside surface of the steel grid ruler is distributed with a dimension scale, the top surface of a shaft washer corresponding with the position of the dimension scale of the steel grid ruler is provided with more than one angle encoder measure heads, and each of the measure heads is supported by a cushion block on the top surface of the shaft washer; and signals measured by the measure heads are connected with a signal processor through a lead, and the signal processor is connected with a computer through a lead. The rotary table bearing has the advantages of reasonably designed and compact structure, no influence of electromagnetism, no generation of a magnetic lag phenomenon, no demagnetization risk, high protection grade (IP67), strong severe environment resistance, very convenient use and the like.