Ideally international investment contracts regulate rights and obligations of parties in balance. In reality, how ever, this cannot be fully achieved by parties. Unfavourable clauses to state/region are existed. These clauses, including but not limited to, choice of foreign/international arbitration abroad, license enrollment/facility, exclusivity of cooperation, long-term contracts, choice of foreign domestic law, waiver of immunity, and confidentiality/intellectual property protection. Understanding the nature of these clauses is important for considerations in negotiation or renegotiation of international investment contracts. How ever, only by understanding these clauses without understanding the whole contract clauses, is not enough for judging balance of each contract. The whole contract clauses includes both unfavorable and favorable have to be compared and analyzed together. This paper, how ever, concentrates mainly on unfavourable clauses to host state/region as a party to international investment contracts.