A portable virtual input control device and a method thereof are provided, which can achieve a purpose of human-machine interaction and remote control. The portable virtual input control device comprises a main body, an operation interface display unit connected to the main body, an image capturing module adjacent to the main body, and a central processing module, built in the main body. The operation interface display unit is movably disposed in front of a head of the user for displaying an operation interface corresponding to a controlled device. The image capturing module captures a position image of a hand of the user outside the operation interface display unit. The central processing module transmits display data to the operation interface display unit to display the operation interface, and connected to the image capturing module for receiving the position image of the hand of the user captured by the image capturing module, and determining a control command input by the user according to the display data and the position image of the hand of the user.