The invention relates to a safety monitoring device, in particular to a safety monitoring device for a polysilicon ingot furnace. The safety monitoring device for the polysilicon ingot furnace comprises an ingot furnace, wherein the upper end port of the ingot furnace is connected with a furnace body end cover through an upper flange in a sealing mode; and an ingot crucible is arranged in the ingot furnace. The invention is characterized in that the bottom below the ingot crucible, in the ingot furnace is provided with a monitoring device for monitoring the leakage of the silicon liquid of the ingot crucible, and the monitoring device is connected with a display unit through a main pipeline. Therefore, the invention has the following beneficial effects: the safety monitoring device for the polysilicon ingot furnace can be used for visually monitoring the leakage of the silicone fluid in the ingot casting process of the ingot furnace and people can detect and treat the leakage in time,thereby effectively protecting the thermal field part, preventing the loss caused by false alarm and greatly reducing the economic loss in production.