The utility model relates to a building garbage storage workshop with an automatic dust suppression system. The building garbage storage workshop comprises a workshop body and the dust suppression system arranged in the workshop. A door of the workshop is the automatic door which is provided with induction devices. The dust suppression system comprises spray devices arranged at the top of the workshop and a pressure water supply device connected with the spray devices. The workshop further comprises a dust suppression control device. The induction devices provide a signal to the dust suppression control device. The dust suppression control device supplies a start/stop signal to the spray devices. The building garbage storage workshop with the automatic dust suppression system has following beneficial effects: vehicles which transfer building garbage can be inducted; and after the vehicles enter the workshop, the automatic door of the workshop is sealed, the dust suppression system is started and water mist is sprayed to curb sweeping dust and dust pollution is reduced.