Efficient OD data visualization method and system

The invention relates to the technical field of urban planning, and particularly discloses an efficient OD data visualization method and system, and the method comprises the steps: a dictionary generation module carries out the correlation searching of the OD terminal point information of a corresponding terminal point column or the OD starting point information of a starting point column according to the same OD starting point information in a starting point column of an original data table or the same OD terminal point information in a terminal point column, copying, extracting, permutation and combination are carried out to obtain sub-data tables, and an attribute dictionary is generated according to all the obtained sub-data tables; the data preprocessing module is used for performing data type analysis on the starting point element information and the end point element information respectively, and performing data type conversion on the starting point element information and the end point element informa