The invention discloses a time monitoring and delay inquiry software system platform based on a clock synchronization device. The time monitoring and delay inquiry software system platform comprises a message acquisition unit, an online monitoring unit and a data processing unit, wherein the message acquisition unit is used for acquiring a communication message among an information main station of a power system, clock equipment and primary/secondary equipment; the online monitoring unit is used for monitoring working states of the primary/secondary equipment and the clock equipment in real time, and differentiating transmission delay and time deviation between the primary/secondary equipment and the clock equipment, so that monitoring data is formed; and the data processing unit is used for processing the monitoring data and the acquired communication message and analyzing the time deviation among the information main station, the clock equipment and/or the primary/secondary equipment. According to the time monitoring and delay inquiry software system platform disclosed by the invention, time information of the primary/secondary equipment of the power system is monitored and analyzed; the time precision, the working states and the like of various time setting equipment can be controlled and calibrated; therefore, an automatic device receives a precise time synchronization signal; and unified supervision of time of the whole network is implemented.