Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China
; PLA, Inst Chem Def, Beijing 102205, Peoples R China
; Acad Sinica, Inst Phys, Taipei 11529, Taiwan
In the low energy reactor antineutrino physics experiments, either for the researches of antineutrino oscillation and antineutrino reactions,or for the measurement. of abnormal magnetic moment of antineutrino, the flux and the spectra of reactor antineutrino must be described accurately. In this paper,the method of calculation of reactor antineutrino spectra was discussed detailedly. Furthermore, Based on the actual circumstances of NP2 reactors and the arrangement of detectors, the flux and the spectra of reactor antineutrino in TEXONO were worked out.