Method and device for protecting data

The invention discloses a method and a device for protecting data, and belongs to the field of data encrypting. The method comprises the following steps of obtaining fingerprint data and voiceprint data of a user; converting the fingerprint data and the voiceprint data into final encrypting information; encrypting private information through the final encrypting information. The method has the advantage that by obtaining the fingerprint data and the voiceprint data of the user, converting the fingerprint data and the voiceprint data into the final encrypting information, and encrypting the private information through the final encrypting information, the easiness in disclosure of the fingerprint data and the voiceprint data of the user is avoided, the problem of disclosure of the correct unlocking picture caused by the user drawing the correct unlocking picture when the private data is encrypted by a picture lock is avoided, and the effect of improving the security of the private data is realized.