[en] Neutron-induced prompt-γ activation analysis (PGNAA) is one of the nuclear analytical methods, which is a powerful tool for quantitive determination of H, B, etc. The applications of PGNAA are increased in recent years. In this paper, the basic principle of PGNAA was introduced briefly. The facilities of PGNAA in HWRR of China Institute of Atomic Energy as well as the efficiency calibration for a wide range gamma from 50 keV to 10 MeV were emphasized. A deep sea polymetallic nodule CRM, GSPN-3 was analyzed by using PGNAA, and the results are in agreement with the certified values. (authors)