Guardrail for security

The utility model relates to the technical field of security equipment, in particular to a guardrail for security. The utility model provides a security guard bar which is convenient to quickly combine and splice, provides real-time monitoring and can increase in a short distance, the security guard bar comprises two mounting racks, seven connecting racks and the like, the seven connecting racks are connected between the mounting racks in a sliding manner, and the connecting racks are also connected in a sliding manner. According to the guardrail splicing device, rapid splicing of guardrails is completed through clamping connection between the installation base and the limiting base, the splicing state is monitored in real time through the detection head and the warning assembly after combination is completed, the stability of guardrail splicing is guaranteed, and meanwhile when the length of the guardrails is insufficient and the guardrails cannot be added continuously, the guardrails can be rapidly spliced.