The utility model discloses an isolation device, it relates to workover technical field, and isolation device includes: two at least isolation supports, it includes to keep apart the support: a pedestal. The setting is in supporting mechanism on the base, the supporting mechanism includes: the setting is in the first body of rod on the base, can dismantle the connection is in the second body of rod of first body of rod upper end, the connection is in regulation pole on the second body of rod, adjust the pole with can produce between the second body of rod slide so that the supporting mechanism can change at the ascending height of vertical side, can be respectively with two keep apart on the support the median that the supporting mechanism is connected. The utility model provides an isolation device can high -efficiently again convenient realize the corral with operation area and keep apart safely promptly in that the well workover is on -the -spot.