Cost control Project cost control is the process by

which a project organisation ensures that its budgeted costs are achieved under changing conditions
According to the pre-drafted plan and standards, using various methods, the project implementation process of various actual costs and the planned cost to compare, check, monitor, guide and correct, as far as possible to make the actual cost of the project control within the scope of the plan and budget management process. (A simple phrase: controlling changes to the project budget)