To make it possible to protect the precious human life from a fire by putting a fireproof liquid into a spray pipe, spraying this liquid and air drying the liquid and to prevent the fire by spraying the fireproof liquid to a burning object in a room.

This method is a spraying method of preventing the fire in a room. The non-burning fireproof liquid 2 is sprayed by a spray 1 to the entire part of the curtains, tatamis, columns, carpets, shojis, floors and wood parts in the room. The fireproof liquid is then air dried and the precious life may be protected from the fire. The spraying pipe is formed to a height of 16 cm, a diameter of 18 cm and a capacity of 480 ml and is capable of preventing the fire by spraying the fireproof liquid 2 to the burning object in the room. The fireproof liquid 2 does not spread burning, does not generate toxic gases, odorless and is harmless to the human body. When the fireproof liquid 2 is sprayed, the effect is semipermanent. The fireproof liquid is colorless and transparent and does not discolor. The fireproof liquid meeting the requirements described above is used.