Abstract: Today the development of human enhancement technology provides opportunities and conditions for the vulnerable group of the disabled to improve their situations and dignity. Some natural defects of the human body caused by accident can be repaired by physical enhancement technology. In addition to helping the disabled get rid of negative emotions， emotional enhancement technology can also increase the public's empathy for the disabled. Moral enhancement technology can prompt people to take responsibility for improving the living environment of the disabled. Moreover， cognitive enhancement technology may also promote moral enhancement because moral sense is based on judgment. Enhancement technology itself is beneficial to the disabled， but its unreasonable distribution and use may even aggravate the disadvantages of the disabled. Thus， its application calls for a deeper rethinking. Only by rationally constructing a fair and just social system can human enhancement technology effectively protect the rights and dignity of the disabled， and this process reflects the protection of the rights and dignity of the whole mankind.

Key words: human enhancement technology, the disabled, dignity