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As a SI time unit second realization equipment, laser cooling-cesium atomic fountain frequency-standard has high accuracy and no drift. NIM5-M is a new generation of laser cooling-cesium atomic fountain frequency-standard developed by NIM (National Institute of Metrology, China). In this paper, thorough research on the engineering applications of NIM5-M is conducted. The continuous automatic operation of NIM5-M is achieved. And a software is implemented to realize automatic evaluation of its frequency shift as well as the performance of atomic clocks and TA(BSNC), which can also detect the atomic clock frequency hopping. Firstly, the main factors affecting the continuous operation of NIM5-M are analyzed. It is found that temperature variation is the main factor affecting the uncertainty of NIM5-M, based on which the basic strategy of laser cooling-cesium atomic fountain frequency-standard continuous operation is proposed. Nine systematic frequency shifts of NIM5-M were evaluated, which indicates that the overall uncertainty of NIM5-M is 1.77×10-15. NIM5-M is used to evaluate the frequency drift of the atomic clock directly. With the interference of the reference source drift avoided, the true frequency offset of the atomic clock is reflected. Similarly, the evaluation result of NIM5-M on TA(BSNC) can also be considered as a reference for TA(BSNC) steering and atomic clock frequency hopping detection.