Teaching volume regulating tool

The invention relates to a microphone for teaching or hosts, and particularly relates to a teaching volume regulating tool. A support of the teaching volume regulating tool provided by the invention is respectively connected with a necklace and a flexible conduit, the other end of the flexible conduit is connected with a microphone, and the microphone is supported near the mouth of a speaker. After being stressed, the flexible conduit deforms, and the position of the microphone changes with the deformation of the flexible conduit. When not being stressed, the flexible conduit does not deform. The flexible conduit is fixed on the support or inserted in the support; and the support is fixed on the necklace or is detachably connected with the necklace. An anti-rotation mechanism composed of a spring, a sphere and a blocking piece is arranged at the tail end of the flexible conduit. The teaching volume regulating tool provided by the invention gives full play to the function of the necklace, and the necklace is dual-purpose, so that the cost of the teaching volume regulating tool provided by the invention is reduced, and the teaching volume regulating tool provided by the invention is more beautiful due to the decorative function of the necklace. The teaching volume regulating tool provided by the invention is convenient to carry, the unfavorable condition of overlarge or over small teaching volume of a teacher is avoided, and the sound fluctuation is effectively prevented. The teaching volume regulating tool provided by the invention is used by actors, program hosts, etc.