The issues of testing technology, simulation of operational conditions and test safety during bench experimental testing of liquid-propellant rocket propulsion systems were considered. The basic principles of ensuring the required level of quality of the propulsion system, the implementation of the technology for preparing and conducting tests, modeling operating conditions, obtaining the necessary information about its characteristics and performance, methods of experimental development and test technology of the propulsion system and its elements, the organization of a test complex for experimental development and a safety system during bench tests are briefly described.