<strong>ملخص الدراسة:</strong>

The study to shed light on behavior rules and their influence with managerial control level.It is applied on a sample of managers in the institute of Missan oil fields , and is been based on a basic hypothesis ,that (functional behavior rules associate significantly with managerial control level).The two researchers used the descriptive method in theoretical part , and the statistical analysis in the practical part ,and for this purpose , a testified questionnaire is developed .The study point out many conclusions, the most important of which ,(functional behavior rules include positive and clear tend in the institute , especially in the achievement functional tasks with security and faithfull nees ,and in applying systems and laws, so the relationships between functional behavior structures and managerial control level is positive and significant).The study concluds with a number of recommendations, the most important of which,(managerial control requires raising the level of employees , participation in putting plans and programs and in making managerial control standards