PE warning protection plate with tracing function

The utility model relates to the technical field of PE pipeline burying, and provides a PE warning protection plate with a tracing function, which comprises a PE pipe, the PE pipe comprises an outer-layer pipe and an inner-layer pipe, the inner-layer pipe is sleeved on the inner side of the outer-layer pipe, a tracing arc plate is sleeved between the outer-layer pipe and the inner-layer pipe, the top surface of the outer-layer pipe is provided with a tracing opening, and the tracing opening is communicated with the tracing opening. An adjusting opening is formed in the side wall of the outer layer pipe. The outer layer pipe is sleeved on the outer side of the inner layer pipe made of the PE material, the tracing port is arranged on the outer layer pipe, the tracing arc plates are sleeved between the outer layer pipe and the inner layer pipe, the tracing arc plates made of the metal material are located below the tracing port, and the tracing arc plates are sleeved on the inner layer pipe, so that the tracing