The utility model relates to a just / heating device of negative pressure isolator for SPF poultry is raised and pathogen experiments, its characterized in that: including the fixed box (1) of fixed connection on isolator air intake inboard, cup joint one fixed coordination braced frame (2) in the fixed box, braced frame (2) are gone up through fixed and are connected two heating pipe (3), the both ends of braced frame (2) and fixed box (1) are all stretched out at the both ends of every heating pipe (3), every heating pipe (3) two stretch out the end and all connect one and take the leading of silking electrical pillar (5), every lead electrical pillar (5) stretch out that the end all stretches out the isolator double -phase to the lateral wall nevertheless and the contactless, every is led the end that stretches out of electrical pillar (5) and all is connected with external power source is electrically conductive through the wire. The utility model discloses an advantage: the utility model discloses device simple and practical, safety, sexual valence relative altitude, and the installation dismantlement is convenient, and the heating pipe stable performance, long service life, the heating performance that adopt are good, have fine popularization and application and are worth.