The utility model discloses a right-angle bidirectional rotary joint, and relates to the technical field of adjustable connection. A right-angle bidirectional rotating joint comprises a right-angle connecting
pipe, mounting pipes are fixedly connected to the two sides of the right-angle connecting
pipe, a
liquid injection assembly is located on the corresponding mounting
pipe and comprises a
liquid injection pipe, a sealing plug, a telescopic sleeve, four fixing rods and a spring, and the
liquid injection pipe is fixedly connected to the corresponding mounting pipe; a liquid injection hole is formed in the portion, close to the liquid injection pipe, of the mounting pipe, and through cooperation of the liquid injection pipe, the spring, the sealing plug, the four fixing rods and the telescopic sleeve, lubricating
oil can be injected only by pressing the sealing plug downwards, so that the lubricating
oil can be discharged into the positioning groove from the liquid injection pipe, and therefore the rotating ball in the positioning groove can be lubricated conveniently; and the sealing plug can be automatically reset under the support of the spring, so that the liquid injection pipe can be conveniently sealed, the lubricating
oil can be conveniently and quickly injected, and the convenience and the high efficiency of the lubricating oil during injection are further improved.