Light steel keel is a new type of building material, mainly used for ceiling and ceiling decoration, with shockproof, dustproof, sound insulation, sound absorption and other functions. In addition, the light steel keel can also play a role in heat insulation, sound insulation, heat preservation, but also electrical, ventilation and air conditioning, communication and fire prevention, alarm pipeline equipment hidden layer. Compared with wood, the price of light steel keel is slightly higher, but it has a long service life and better waterproof and fireproof performance. Therefore, the choice of light steel keel or wood square should be based on personal needs and budget.