The invention discloses a multi-dimensional assessment and precise construction investment evaluation method based on coverage and value relevance and relates to the technical field of big data analysis in data communication. The method disclosed by the invention performs multi-dimensional analysis on an MR poor coverage ratio, a quantity of MR sampling points, user flow, number of users, user perception data and / or user set information, field road test data, complaint information and suppression flow big data, so that indoor values are excavated, precise planning is performed, site building value is effective improved, service turn-around time is shortened, a network awareness word-of-mouth image of an operator is improved, and finally enterprise benefit is improved.