The invention discloses a centralized alarm signal uploading device and method for a main distribution frame, and relates to the technical field of communication. The device includes: an alarm signal sampling circuit, electrically connected to the main distribution frame, used to sample the alarm signal of the main distribution frame to obtain a sampling signal; a sampling signal trigger circuit, used to receive the sampling signal from the alarm signal sampling circuit, according to The sampling signal triggers the alarm upload signal; the alarm upload access circuit is used to receive the alarm upload signal from the sampling signal trigger circuit, and connect the alarm upload signal to the shared network platform. The circuit of the alarm signal uploading device is simple, easy to implement, and easy to transform and popularize communication bureaus; the upload method utilizes the network platform of the centralized monitoring system of existing communication bureaus to upload remote alarm signals, and shares the network platform of the original centralized alarm system. The performance is stable and reliable, avoiding repeated construction and investment.