The invention discloses a four-color combination attention device for a shuttleless loom. The four-color combination attention device comprises a four-color combination lamp formed by combining a red lamp, a green lamp, a yellow lamp and a blue lamp. The four-color combination lamp is mounted on one stand column of the loom horizontally or vertically through a rotary support. One of the yellow lamp and the blue lamp in the four-color combination lamp is connected into a warp yarn and locking belt detection loop in series, and the other one of the yellow lamp and the blue lamp is connected into a weft yarn and overlock detection loop in series. By the adoption of the technical scheme, the four-color combination lamp can visually display the current state of the machine, a technician and an operator can directly judge reasons for a machine halt, treatment time is saved, the capacity is improved, and the four-color combination attention device is simple in structure, small in size, low in weight, convenient to install and maintain and low in price.