The utility model discloses a weighing device and weighing system, including support mechanism, weight monitoring mechanism, display module, control module and conversion module, the support mechanism is including the load bearing member who is used for bearing the weight of article, weight monitoring mechanism with the load bearing member butt, weight monitoring mechanism with control module electric connection, control module with conversion module electric connection, conversion module control module all with display module electric connection. Can be fast and the accurate quantity with article show in the display module for the staff can convenient and fast ground the article of depositing in to the goods yard real -time management and control record carries out, optimize parts article the come in and go out managerial efficiency and the level in warehouse, use manpower sparingly, reduce enterprise's recruitment cost, and the operation of above -mentioned weighing device is simple, the reliable operation.