Underground dust collection trolley

An underground dust collection trolley comprises a trolley body, wherein a trolley base plate is arranged on the trolley body, an exhaust fan, a dust purifying box and a harmful gas purifying box are installed on the trolley base plate, an air outlet of a first replacement fan is communicated with the dust purifying box, the dust purifying box is communicated with the harmful gas purifying box through a second replacement fan, and the harmful gas purifying box is communicated with the exhaust fan. The underground dust collection trolley can solve the problem that a large amount of dust and a large amount of harmful gas exist underground, underground dust and harmful gas collection effect is good, a good air environment is provided for underground operation, the occurrence of occupational diseases is reduced, and work effectiveness is improved.