The invention relates to an intelligent mercurial thermometer capable of being monitored in real time. The intelligent mercurial thermometer comprises a strip-shaped mercurial thermometer body. A capillary tube is arranged in the mercurial thermometer body and communicated with a glass bulb located at the lower end of the mercurial thermometer body, two longitudinal guide lines parallel with the capillary tube are arranged in the mercurial thermometer body and respectively provided with a plurality of longitudinally-arranged transverse guide lines, spacing distances of the transverse guide lines on the longitudinal guide lines are the same, the transverse guide lines on the longitudinal guide lines correspond to one another and are separated by the capillary tube, one end, located on the capillary tube, of each transverse guide line is exposed out of the inner wall of the capillary tube, one end of each longitudinal guide line stretches out of the mercurial thermometer body, the stretching end of one longitudinal guide line is electrically connected with one output end of a direct-current power supply, and the stretching end of the other longitudinal guide line is electrically connected with the other output end of the direct-current power supply through a current information processor. According to the intelligent mercurial thermometer, the real-time temperature can be visually displayed as numbers.