The invention discloses a gridded temperature control system for a concrete dam. The gridded temperature control system for the concrete dam comprises a real-time inductor, a temperature control server and a rapid regulation-control machine which are sequentially connected. The gridded temperature control system for the concrete dam further comprises a database server, wherein the rapid regulation-control machine comprises a plurality of industrial personal computers, a plurality of temperature compensation sources, a plurality of PLCs, a pipe network with a variable topology structure and a wireless base station, the pipe network with the variable topology structure comprises a plurality of gridded multi-pass control units, and the temperature compensation sources, the PLCs and the wireless base station are connected with the industrial personal computers separately; the database server is connected with the real-time inductor and the rapid regulation-control machine separately; and the pipe network with the variable topology structure is arranged in a dam body. According to the gridded temperature control system for the concrete dam, a temperature control pipeline for the dam isgridded, and a sensor group is arranged around grid nodes, so that the flexibility and pertinence of temperature regulation-control for the dam are improved; and adverse factors possibly occurring inthe temperature regulation-control for the dam are predicated in advance, and a traditional passive temperature regulation-control manner is changed into active temperature regulation-control, so thatthe uncertainty of the temperature regulation-control for the dam is reduced.