The first thing to do is to calm down! Then carefully observe the structure of the filing cabinet door to see if your company has the same filing cabinet, and you happen to have the key, which will be much easier. You can try to fiddle with this key, and it usually opens smoothly.

Secondly, another method is to find a flat screwdriver with a suitable size, then insert the screwdriver into the lock, rotate it hard in the direction of opening the cupboard door (usually the cupboard door rotates to the right), and move it back and forth several times, so it can be opened in most cases.

Then, there is another way: check where the lock post of the filing cabinet is, carefully observe how the cabinet door of the filing cabinet is locked, and then knock it a few times with something (such as a hammer and a screwdriver). Don't knock too hard. We should aim at opening the cupboard door so as not to damage the cabinet. Our main purpose is to open the filing cabinet.

Finally, this is a method that no one wants to use. If the above three methods can't open the filing cabinet, it can only be like this: find an electric drill, drill through the lock core gradually with the electric drill, and take down the whole lock core. Be careful when drilling, and don't drill the cabinets of filing cabinets out of shape, because filing cabinets are "fragile" office furniture, so care should be taken.