Abstract: The test object of water pump energy efficiency is largely from the water pump system used in enterprises. The complexity of the application environment of pumps, the dispersion of testing parameters, and the uncertainty of manual testing have brought more significant difficulties to the field testing work. To meet the demand for on-site water pump energy efficiency testing, a portable testing hardware module was constructed based on GB/T 16666-2012 Monitoring and testing for energy saving of motor-pump liquid transport system. A hydraulics and thermodynamics testing module was developed based on Visual Studio to meet the demand for automated testing. The verification test shows that the system has the characteristics of easy portability, high test accuracy, stable and reliable operation, and can provide test data support for the energy-saving technical transformation, energy-saving audit, and energy efficiency benchmarking of water pumps. The verification test shows that the system is easy to carry, has high testing accuracy, stable and reliable operation, and can provide test data support for energy-saving technical reform of pumps, energy-saving audit and energy-efficiency benchmarking, etc.