Probiotics, a component that is generally referred to as a living microorganism or a microorganism present in a host. Most studies have shown that probiotics can regulate immune function in the body. Many studies have attempted to understand whether the use of probiotics can prevent allergic diseases or not.

Inclusion Criteria:

• Estimated by PI.

Exclusion Criteria:

• Be allergic to medicine
• Take medicine like immune inhibition, or steroid injection in two weeks
• Participate in another clinical research or immune therapy in one month
• Have severe disease
• Inappropriate for this trial judged by PI

Double-blind.