The study aimed to identify types of contracts presenting all aspects related engineering and legal fields . It also attempted to assess professional practices . the study sample consisted of (75) contracters selected from Amman . The study adopted the qualitative quantitative method , To achieve goals of the study , the researcher designed a questionnaire which was presented for judes for verification and amending Arithmetic mean and standard deviation and test hypothesis were used in the statistical processing of the data using SPSS. The result revealed that the best and clearest type of contracts was the government type with a Percentage (42.7%). Most companies prefer competitive contract with Percentage (40%) ; (50.7%) reflect The binding resbonsibilityTo local and muncipal laws. Wherever there was a conflict in contract dcuments, Priority should be given to FIDIC As seen in (46.7%) percentage . The engineer's order regarding anything Would never be executed without being Accompanied with a signed written Form and the value of z = 8.95 which is a moving factor .