Abstract: A weak password detection method and device based on deep learning, an electronic device, and a storage medium are provided. The method includes: acquiring a password character string to be detected; processing, by applying a fully trained weak password detection model, the password character string to be detected to obtain a strong/weak password classification label of the password character string to be detected, the fully trained weak password detection model being obtained by training a deep learning model with a password character string as an input and a strong/weak password classification label corresponding to the password character string as a supervision; and marking the password character string to be detected as a weak password under the condition that the strong/weak password classification label is a weak password label.