Abstract : The Laser Protection Security System based on ESP8266 is an IoT-enabled solution designed to safeguard restricted areas by detecting unauthorized intrusions using a laser beam and photo sensor mechanism. The system functions by projecting a laser across the secured zone onto a light-dependent resistor (LDR) or photodiode sensor, which continuously monitors the presence of the laser beam. When the beam is interrupted by an object or individual, the sensor detects a change in light intensity, prompting the ESP8266 microcontroller to trigger an alert. Alerts are provided through sound (buzzer) and visual (LED) indicators, and remote notifications can be sent via Wi-Fi to connected devices or apps (such as Telegram or Blynk). This project combines laser-based detection with the wireless capabilities of ESP8266 for real-time monitoring and remote management, offering a scalable, low-cost, and energy-efficient security solution easily integrated into smart home or industrial systems. The system is highly accurate, responds rapidly to intrusions, and can be expanded for broader coverage. However, its effectiveness depends on clear line-of-sight and stable Wi-Fi connectivity, and it requires regular calibration to maintain reliability. Keyword: Nodemcu ESP8266 board Laser module, LDR sensor module, LED bulb, 100 Ohm resistor, Buzzer, Breadboard Jumper wires.