Hello: Yes, it must be handwritten, not printed. When the application for joining the Party is submitted, it must be written by the applicant himself. According to the instructions for filling in the "Volunteer Letter for Joining the Party" printed by the Central Organization Department, it is clearly stipulated that "it should be filled in with a pen or a brush, and the handwriting should be clear." All grass-roots party organizations should conscientiously implement this provision, and those that do not conform to it should be corrected. The application for joining the party should also be handled in this spirit. Therefore, the application for joining the party must be written in person, and the signature cannot be printed and submitted by computer.