Temperature-adjustable vacuum biological safety cabinet

The utility model relates to the technical field of biological safety cabinets, in particular to a temperature-adjustable vacuum biological safety cabinet which comprises a cabinet body, bases are symmetrically and fixedly installed at the lower end of the cabinet body, reinforcing ribs are fixedly installed in the two bases, slag discharging openings are symmetrically formed in the side walls of the cabinet body, rectangular grooves are formed in the inner walls of the two slag discharging openings, and the rectangular grooves are communicated with the rectangular grooves. The limiting disc is movably arranged in the limiting groove, an HEPA filter is movably installed in the rectangular groove, springs are fixedly installed at the four corners of the upper end and the four corners of the lower end of the HEPA filter correspondingly, the ends, away from the HEPA filter, of the springs are fixedly connected with the inner wall of the rectangular groove, inner rods are symmetrically and fixedly installed in th