The invention discloses a pediatric special-purpose visual sputum suction device comprising a housing, a guiding groove, a first spring, a sliding block, a push rod, a connecting rod, a joint, a sputum suction tube, a support block, an endoscope, a display device, an air discharge groove, an air bag, a second spring, an air guide cylinder, an ejector rod, a connecting tube, a rotating plate and acleaning pad. The pediatric special-purpose visual sputum suction device is ingenious in structure, powerful in function, simple in operation and low in time and labor consumption. A negative pressuresuction mechanism is adopted for sucking sputum of a child patient, convenience of operation can be brought to medical care workers, the medical care workers can conveniently grasp sputum suction conditions in the child patient's body based on an auxiliary function fulfilled via the endoscope, excessive suction can be effectively prevented, fuzzy display frames caused by the sputum adhered onto the endoscope can be prevented via arrangement of a cleaning mechanism, and convenience of operation can be brought to the medical care workers; thus great convenience of sputum suction care for the child patient can be brought to the medical care workers, child patient treatment and rehabilitation can be facilitated, and the sputum suction device can be popularized and applied clinically.