Washing machine and assembly structure thereof

The invention provides a washing machine and assembly structure thereof. A washing machine has an assembly structure of a front frame and a bottom frame using fastening members, which has improved aesthetics and workability and excellent fastening force. The front frame includes a front surface part, an extension part extended rearward from the front surface part, a first connection part extended upward from the extension part, and openings formed on the extension part, and the bottom frame includes a bottom plate and a second connection part extended upward from the bottom plate and connected to the first connection part through fastening members. Each of bracket frames installed in the openings includes a guide channel to guide entry and exit of each of the fastening members when the fastening members are fastened to the first connection part and the second connection part.