The form function is the last of the four business functions (activity, dictionary, kanban and form). It is a voucher for ordering and receiving goods, an important reference for monthly, quarterly and annual statistics and analysis of enterprises, and an important form designated by the state and enterprises for printing, sealing, delivery and preservation; At the same time, it is also the most commonly used form of information for enterprise managers. Leaders rarely use the interface to query and analyze, and more use fixed format tables. Therefore, formal function is a kind of functional form that enterprises attach great importance to from management level, operation level and implementation level.