The system of labor contract is the core issue of the Labor Law.The termination of labor contract is one of the main contents in the system of labor contract while unilateral cancelation of a labor contract becomes the key issue.Responsibilities are the key points in the system of non-fixed term labor contract after the cancellation of such contracts,whose lawful force theory shows the restriction on unilateral cancellation right of the employers.China should draw lessons from foreign countries where the freedom to dismiss and limitation of the abuse of dismissal right are well-reconciled in dismissal protection systems in its legislative improvement as the justification of the current dismissal system while,in China,just one exclusive method is applicable to the termination of all the three types of contracts,which remains questionable.Besides,improvements are required for what facts constitute dismissal,reasons for dismissal and length of notice of termination of employment contracts.