Fixing device of detection instrument for environmental monitoring

The utility model discloses a fixing device of a detection instrument for environmental monitoring, which comprises a body and a fixing part convenient to disassemble and assemble, the fixing part comprises a lower guide pipe arranged on the top of the body, a first fixing ring arranged on one side of the lower guide pipe, an upper guide pipe arranged on one side of the lower guide pipe, a second fixing ring arranged on one side of the upper guide pipe, a plurality of evenly-arranged fixing blocks arranged on one side of the first fixing ring and a plurality of evenly-arranged fixing grooves formed in one side of the second fixing ring. Through the arrangement of the body, the fixing blocks, the fixing grooves, the springs, the fixing rods and the non-slip mats, the fixing blocks are embedded into the fixing grooves, the springs can extrude the fixing rods on one sides of the sliding blocks, the fixing rods penetrate through the fixing through holes to enter the containing grooves, and the problems that an ex