Because Nobel is not only a chemist, but also an inventor, engineer and entrepreneur, he has many invention patents, companies and factories, so he has accumulated a lot of wealth. One year before his death, he made a will, leaving a small part of his legacy to his relatives, and most of the rest set up a fund and set up a Nobel Prize to reward people who made outstanding contributions to mankind every year.
In memory of Nobel, the annual award ceremony was held on the afternoon of his death.