It depends on whether the transformation is big or not. Whether the field gap is big or not is the creativity mentioned in the patent law. If it is applied to other fields, the transformation is great, and many technical difficulties need to be overcome, and the fields are quite different, it shows that it has high creativity and can apply for invention patents or invention utility models at the same time. On the other hand, if it is proved that the degree of creativity is not high, you can apply for a patent for utility model.
In creative judgment, it is best to find a professional patent agency to help analyze.