To make instruments to be used easier to take in the dental treatment by keeping the instruments higher than other instruments.

In an instrument holder 5 for dental treatment, a plurality of instruments 81 to 85 for dental treatment are placed in parallel thereon. The holder 5 includes air inflation containers 111 to 115 to be expanded by forcing air thereinto on the surface where the instruments 81 to 85 are placed. In the dental treatment, air is forced, for example, into the air expansion container 112 corresponding to the instrument 82 to be used to raise the instrument 82, thereby facilitating the taking out thereof.