The fuse is tripped for three reasons, an overload, a short circuit or a ground fault. All are potentially dangerous, because it means there is some type of problem. Because all overcurrents cause heat, you should attended to the problem immediately. You do not want a damaged circuit, a fire to start, or someone to be electrocuted. To correct an overload, you need to find what fuse was tripped.
Many people mark their fuse box with labels.
If not, you will be able to tell which part of the house does not have power. Check that part of the house before you go to the fuse box. Likely there are multiple appliances in use, or something plugged in that isn't normally there. Anytime a circuit cannot handle the amount of power going through the fuse to the outlets, it will trip the fuse. Unplug any extra appliances or items that could be tripping the fuse.