Deputies said the incident happened at the gun range on sheriff's office property in the 3600 block of County Road 45 in Angleton at around 2 p.m.
During a training exercise, a student accidentally discharged his handgun, striking the 30-year-old range instructor in the abdomen, the sheriff's office said.
A spokesperson for the sheriff's office said the wounded deputy was transported by Life Flight to Memorial Hermann hospital for treatment of a deep flesh wound and was approved for release.
The wounded deputy has been with the Brazoria County Sheriff's Office for about 10 years.
The deputy's identity has not been released yet.
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