To enable a user to easily perform a keyboard operation without hitting the head against a notebook-sized computer and to perform an operation even in a sit state while changing his/her attitude, in a mounting table for the notebook-sized personal computer which can be operated in a state the user lies on his/her back.

The mounting table for the notebook-sized personal computer is provided with: a mounting plate for mounting the notebook-sized personal computer on the upper surface; a front edge supporting body for supporting the front edge of a lower part of the notebook-sized personal computer so that it does not move forward; an upper surface rear part fixing body for fixing the lower part upper surface rear part of the notebook-sized personal computer to the mounting plate; a supporting leg for turnably holding the mounting plate at a prescribed height; a first angle regulation means for regulating turning of the mounting plate at a first angle where the upper surface is included in a range from almost 0 degrees to 45 degrees; and a second angle regulation means for regulating the turning of the mounting plate at a second angle where the upper surface is included in a range from almost 90 degrees to 180 degrees.