Provided is a system for testing performance parameters of slurry for synchronous grouting of a shield tunnel on a construction site. A field data collection terminal is used for being integrated with a data collection module, a data communication module, a data processing and analyzing module and a data management and issuing module, wherein the data collection module, the data communication module, the data processing and analyzing module and the data management and issuing module are connected with one another and communicate with one another. The system further comprises a remote server. The slurry level, density, particle size information, fluidity, consistence, injection intensity and other information of slurry are tested, a data result subjected to calibration processing and analysis is automatically sent to the remote server through network communication technologies according to the preset time and preset mode, and the functions that a data bank stores data and designated persons are informed through mobile messages are achieved; and meanwhile, monitoring control over a field collection computer can be achieved, and faults of the field collection computer can be cleared up in time conveniently. By means of the system, remote automatic testing on the performance parameters of slurry for synchronous grouting of the shield tunnel on the construction site is achieved, the efficiency and accuracy of testing on the performance parameters of slurry are improved, and great convenience is brought to constructors to master the slurry performance.