A method and an apparatus for treating laundry are disclosed. The method for treating laundry according to an embodiment of the present disclosure includes generating fusion sensing data on laundry by using a plurality of heterogeneous sensors, acquiring information about the laundry using the fusion sensing data, and controlling a washing cycle of the laundry based on the information about the laundry. According to the present disclosure, it is possible to collect accurate information about the laundry by using the fusion sensing data based on the heterogeneous sensors, and to control the washing cycle in a manner suitable for the laundry based on the collected information.