To eliminate inconvenience and danger arising from the situation wherein a person has to bend his or her waist to peep a burner part, when a burner of a gas cooking appliance is checked for ignition or fire power is regulated.

In this device for monitoring flame of a burner of a gas cooking appliance, two mirror mounting plates 2 having a mirror 1 mounted thereon is assembled in a hinge connection so as to constitute two sides of a triangle and secured to a base 7 through a support 5, and the constitution wherein angle in a horizontal side and elevation angle of the mirror can be regulated is formed. A person can check state of a flame indirectly by seeing the flame reflected in the mirror without bending in a standing posture.