The present invention relates to a safe and reliable home decoration network platform system and a use method. The safe and reliable home decoration network platform system comprises a platform service unit, a classification service unit and a user unit connected with the platform service unit by the internet; the platform service unit is used for input, output and processing of information between the user unit and the classification service unit; the user unit means a platform character relationship and comprises a home owner module, a supplier module, a designer module, a foreman module and a supervisor module; the classification service unit comprises a 3D designer module, a 3D commodity module, a house type module, a designer works module, a home owner works module, an E-commerce module and a flow processing module; online design on the home decoration platform system is implemented and a user carries out online design and previews a design effect in advance; a designer carries out online design and shows public works and the user directly enjoys and selects the works of the designer on a platform; and a total charge supervision function is provided for the integral home decoration project, the integral project can be orderly propelled to be successfully carried out and contract breakage or wrangle is avoided.