The utility model discloses an electron video monitoring device based on internet, which comprises a camera, the lower surface of camera rotates and is connected with branch, and the lower surface ofcamera is close to branch one side position department and is provided with angle adjustment mechanism, the bottom rigid coupling of branch has fixed box, the side surface of fixed box is provided with pyroelectric infrared sensor, the utility model discloses in through having designed angle adjustment mechanism, can the comparatively quick shooting angle to the camera adjust, made things convenient for the user, through having designed rotary mechanism, can rotate the camera according to the actual demand, guaranteed the integrality of monitoring the picture, avoided appearing the control blind area, through having designed pyroelectric infrared sensor, in case someone walks about or the entering scope, just automatic the beginning is recorded a video, and nobody does not record, and intelligent degree is higher, has practiced thrift the storage area in the video monitoring device, and monitoring effect is good for this video monitoring device, the facilitate promotion.