Abstract:This thesis mainly explains the electrical design basis ,principle, methods and the conclusion of the design choice in each system in the design of certain Guesthouse. The thesis includes seven Chapters. previous four Chapters are mostly about the design of the forceful electric power Part ；Chapter 5 is mostly about the design of the light current and fire-fighting; Chapter 5 is mostly about the design of the rounding for lightening systematical compose.
The part of the forceful electric power mainly including: the distribution system of the low voltage, lighting system and rounding for lightening systematical compose ，among others include load calculation, illumination calculation .The part of the fire-fighting mainly including:the design of the warning system and linked system etc.
The design adds up to 26 electric charts. Including 20 graphics for the forceful electric power parts and 6 graphics for the fire-fighting parts. All drawn by Autocad.
This Construct electricity design of the Guesthouse is a graduation design，The purpose of this design is to give us a chance of synthetical usage of the knowledge we have learned. Besides, it can train our ability to analyze and solve practical problems in Construct electricity in dependently so that the theory is connected with practice and a solid base is made in favor of future work.
Key Words： Illuminance；fire-fighting；lighting system
