France's new bill supporting independent bookstores against competition from web-based retailers introduces "discrimination against online consumers", said Amazon.
Companies like Amazon are restricted from offering combined 5% reductions and free deliveries under the new laws.
Amazon said the measures would "reduce French people's spending power".
The country's 3,000 independent bookshops had complained they can't compete with cut-price offers online.
The opposition right-wing party UMP proposed the bill, but it also has the support of the left.
It has been approved by the lower house and will now be sent to the Senate.