The invention discloses a temperature-variable-rate controllable water bath system. The temperature-variable-rate controllable water bath system comprises a water bath kettle, a regulation and controlwater conveying system and a water conveying pipeline, wherein the water conveying pipeline is arranged at the bottom of the water bath kettle bottom, the water conveying pipeline is a spiral double-pipeline, a water draining hole is formed in the upper part of the spiral double-pipeline, the regulation and control water conveying system comprises a cold water tank and a hot water tank which areseparately arranged, the two pipeline water inlets of the spiral double-pipeline are connected with the cold water tank and the hot water tank respectively through a water conveying pump, and the twopipeline water outlets of the spiral double-pipeline are located in the center of the bottom of the water bath kettle. According to the temperature-variable-rate controllable water bath system, intelligent water bath maintenance with controllable temperature change rate is realized, the specific temperature can be generated, the maintenance water in a specific temperature change process can be generated, various test samples with different environmental requirements can be met, and the temperature-variable-rate controllable water bath system is suitable for various scientific experiments and industrial production with water bath maintenance requirements.