A fixation assembly is configured to fix an electroacoustic transducer to a shell of the electronic device, and includes a first support and a second support. The first support defines a receiving space and a sound transmission channel communicating with the receiving space. The electroacoustic transducer is received in the receiving space. The second support is engaged with the first support and configured to restrict freedom of the transducer assembly cooperatively with the first support. Even when the electronic device is under extreme conditions, a relative position between the electroacoustic transducer and the fixation assembly remain unchanged. The second support is engaged with the shell to fix the first support and the electroacoustic transducer with the shell, such that the electroacoustic transducer is fixed relative to the shell, improving reliability of the electronic device under extreme conditions.