A computer device and a data protection method therefor are provided. The computer device includes an embedded controller, a data storage, and a power module. The embedded controller includes a general-purpose input-output port. The data storage is coupled to the embedded controller through the general-purpose input-output port. The power module is coupled to the embedded controller. The embedded controller detects whether an abnormal shutdown event occurs. When the abnormal shutdown event occurs, the embedded controller informs the data storage to perform a buffered data storage operation through the general-purpose input-output port, so as to transfer buffered data in the data storage to a non-volatile storage area in the data storage, and the embedded controller controls the power module to maintain power supply to the data storage in a predetermined time period.