The preparation of construction engineering budget is the most critical linkof construction engineering cost budget control work,but also the initial link,the quality of the preparation work directly determines the quality and efficiencyof construction engineering cost budget control to a certain extent.In theprocess of budgeting,it is necessary to collect accurate and effective data andinformation,need to do a good job in all aspects of the investigation,theconstruction environment of the site,the cost of construction materials,characteristics and transportation distance,analysis and identify problems,andmodify the plan.