What is Claimed is:

1. A body painting method for simultaneously creating a plurality of patterns, which employs a specialized computer-controlled body-painting machine to print the body-painting patterns, comprising the following basic steps:
1. Opening a plurality of pictures used for body paintings simultaneously in a computer;
2. Placing objects having a plurality of parts to be painted onto a corresponding clamp, and holding each part within the printing area of a printing device by means of the clamp；
3. Determining the location of each part by a camera and displaying them on a display of the computer, and adjusting the size and printing location of each opened picture through the computer so that the size of each picture is equal to or larger than the size of its respective body part to be painted while the printing location of each picture is positioned at said respective body part;
4. Starting the printing device by the computer so that all pictures are printed as one pattern by the printing device, while each picture is printed right onto its respective body part.
2. The body painting method for simultaneously creating a plurality of patterns according to claim 1, characterized in that a preprocess
   for the body parts to be painted can be performed according to the properties of different body parts so as to meet the requirements of printing and human body protection; and a post-process can also be performed upon completion of printing so as to meet the requirement of aesthetics and protection of the printed patterns.
   
   
3. The body painting method for simultaneously creating a plurality of patterns according to claim 2, characterized in that said step (3) includes following steps: taking a static photo illustrating the location of each body part to be printed by the camera; displaying these static photos on the bottom layer of the adjusting working area for the opened pictures of the display to respective position which corresponds to painting body part; presenting each picture on the display semi-transparently so that the profile of the nail beneath the picture can be seen clearly; adjusting the size of each picture so that it is slightly larger than that of the painting body part; and then drawing a profile line of the painting location; removing the pixels of the picture beyond the profile so that the edges of the picture overlap the edges of the nail.
   
   
4. The body painting method for simultaneously creating a plurality of patterns according to claim 2, characterized in that said preprocess further includes the step of applying a coating that can be readily washed off to the surrounding of the painting body part; and the size of each picture is adjusted in step (3) so that it is slightly larger than that of the painting body part, and those parts of the body-painting pattern outside the painting body part are then erased using suitable detergents after printing.
   
   
5. The body painting method for simultaneously creating a plurality of patterns according to claims 3 or 4, characterized in that the fingernails can be divided into two groups according to the following two modes during the painting process, and all the fingernails are preprocessed before printing and are post-processed after printing.
   
   Mode 1. All the four fingers except for the thumb of one hand and the thumb of the other hand are placed in one group, and the other five fingers are placed in another group;
   Mode 2. The eight fingers of both hands except for the two thumbs are placed together to be a group, and the two thumbs are to be another group.