The invention discloses a flame-retardant AC frequency converter explosion-proof box with an anti-pollution function, and the box comprises a box body, a fixed plate is disposed in the box body, a frequency converter is disposed on the fixed plate, and the upper end surface of the fixed plate is provided with a first groove. The frequency converter is reasonable in structure, noise generated whenthe frequency converter works is effectively controlled through a silencing mechanism, noise pollution is avoided, vibration of the frequency converter is reduced through a damping mechanism when thefrequency converter works, damage, caused by vibration, to the frequency converter and influence on the working efficiency are avoided, and meanwhile the service life of the frequency converter is prolonged; by arranging a triggering mechanism, the frequency converter can be quickly extinguished and cooled when continuously working and accidentally catching a fire, fire disasters and resource losses are avoided, and by arranging a clamping mechanism, a silencing plate can be conveniently disassembled and assembled, and the situation that the working efficiency is low due to a tedious replacement process is avoided.