Nowadays,the near space hypersonic aircrafts that has made a successful test flight has become serious potential threats,the early warning and detection of the near space hypersonic target have become a new research direction. SBIRS is the most advanced early warning system. In this paper,the main categories and characteristics of HTV-2 is analyzed,on the basis of the introduction of the working mechanism of SBIRS,the applicability of SBIRS to the HTV-2 detection is analyzed.