The invention relates to a preparation method of paint-color bath art product and belongs to the technology field of paint-color bath art products and methods. The invention provides the preparation method of paint-color bath art product and a novel product prepared using the method based on the key technology of organically combining bath products and artwork; the method comprises a paint-color bath art product embryo; the operation steps are described as follows: the paint-color bath art product embryo is used as the subject matter, and is made into the finished paint-color bath art product through smoothing treatment, patterning decoration, comprehensive decoration, archaizing and old making, drying, checking and dressing and coat painting. The product is used as sanitary wares; bath products and artwork are organically combined as a whole; bath products are made into artwork, and the bath products are endowed with the appreciation value of artwork while fully displaying the practical value to meet different needs of the consumers and guide consumption; the method is simple and practical, the product is wearable and beautiful, and can be easily produced, and the cost is low, thus facilitating popularization.