Detergent inputting device for washing machine

PURPOSE: A detergent injecting device of a washing machine is provided to selectively use power type or liquid type detergent according to the condition relating to the washing machine, thereby improving the convenience of use. CONSTITUTION: A detergent injecting device of a washing machine includes a detergent case(20) having a powder detergent injection part(22,24) for receiving at least a power detergent or a powder bleaching agent and a fiber rinse injection part for receiving a liquid fiber rinse and a siphon cap(28) at a lower part, and a liquid detergent case(30) detachably mounted in the powder detergent injection part of the detergent case and mounted with a siphon cap(32) on a bottom surface for injecting the liquid detergent by the siphon operation.