Method of insurance negotiating by way of general and special conditions with insurance companies is not entirely adequate to the legal relations in reinsurance contract, though, it can be seen on the European continental reinsurance market. Better practice should speak in favor of ad hoc reinsurance contract conclusion that, in each case, would better match reinsured needs. This would be in the interest of both contractual parties – reinsurer and reinsured, because legal certainty relating to contractual duties increases.