The bearing design of the balcony is generally kn per square meter, and the bearing capacity of the balcony is about 200 kg per square meter. The balcony end is also allowed to bear per square meter 1kn, because the balcony end can also bear the concentrated load of 100kg per linear meter. There are two bearing ranges of the balcony, one is the self-weight of the balcony, and the other is the increasing change of the balcony. The load-bearing design standard of balcony implemented by the state is 250 kg per square meter, which will bring security risks.