A mobile phone cover with mechanical keyboard is provided. The mobile phone cover includes a top cover, a bottom cover and a connecting assembly connecting the top cover and the bottom cover. The top cover and the bottom cover cooperatively define a receiving space for receiving a mobile phone. The top cover includes a first communication unit. The bottom cover includes a second communication unit. The top cover communicates with the bottom cover via the first communication unit and second communication unit. The mobile phone cover further includes a mechanical keyboard module. The mechanical keyboard module includes a number of first mechanical keys located on the top cover and a number of second mechanical keys located on the bottom cover.