The utility model belongs to the technical field of
fuel gas equipment, and particularly discloses an observation panel and
fuel gas heating equipment. The observation panel comprises an observation plate and further comprises a panel and a fixing piece, the panel is provided with a mounting groove, an observation opening is formed in the bottom of the mounting groove, the fixing piece is a conical ring body in the initial state, and when the small-
diameter end of the conical ring body is pressed, the fixing piece generates plastic deformation to form a circular ring body and is in
interference fit with the interior of the mounting groove; the observation plate is clamped between the bottom of the mounting groove and the fixing piece and covers the observation opening, and the observation opening and the opening of the circular ring body at least partially coincide in the
depth direction of the mounting groove. According to the observation panel disclosed by the utility model, the small-
diameter end of the conical-ring-shaped fixing piece is pressed to generate plastic deformation so as to form the circular ring body which is in
interference fit with the interior of the mounting groove, so that the observation panel is assembled, the material cost and the labor cost in the assembling process are reduced, and the safety and the reliability of
gas heating equipment are improved.