The utility model relates to a spout and use explosion chamber temperature measuring device of this spout for experiments, explosion chamber temperature measuring device, including moving the end subassembly, quiet end subassembly with install the spout on moving the end subassembly, move the end subassembly including moving arc contact and air cylinder, quiet end subassembly includes that quiet arc contact and quiet arc touch the seat, the spout includes the spout body, the tube structure that the spout body extends along upper and lower direction for the axis, be provided with the daylighting hole that the power supply arc light passes through when using on the section of thick bamboo wall of spout body, explosion chamber temperature measuring device still includes the spectrum appearance and causes the optic fibre in the spectrum appearance with the arc light in the daylighting hole, the inside arc light of spout reveals through the daylighting hole, it is very short that time appears in electric arc, in causing the spectrum appearance through optic fibre with the arc light, measurement explosion chamber that can be accurate spouts the temperature of intraoral electric arc in the course of the work, compared with the prior art, this temperature measuring device measured deviation is less.