Furnace combustion observation instrument

The invention provides a furnace combustion observation instrument, and belongs to the technical field of boiler detection equipment. According to the furnace combustion observation instrument, a protecting jacket body covers the exterior of an observation probe for protecting the observation probe, so that direct damage to the observation probe by flame and high temperature in a furnace is avoided; through an air guide cavity arranged in the protecting jacket body and a blast mechanism used for blast to the air guide cavity, heat transferred to the air guide cavity from the exterior of the protecting jacket body is taken out through air flow continually; the situation that the internal temperature of the air guide cavity is too high and consequently the observation probe is damaged is avoided; through arrangement of heat-resisting protective layer at the exterior of the protecting jacket body, heat radiation is isolated and reduced; through arrangement of a heat-conducting layer in the protecting jacket body