Sputum excretion device for children

The utility model belongs to the field of medical instruments, and particularly relates to a children sputum excretion device which comprises a shoulder fixing frame and a back supporting frame which are connected in sequence, a sputum excretion beating assembly is arranged on the back supporting frame, and a sliding groove is formed in the middle of the back supporting frame in a hollowed-out mode. The sputum excretion flapping assembly comprises a sliding block arranged on the sliding groove in a sliding mode and a flapping piece arranged on the sliding block and further comprises a linear module driving the sliding block to move along the sliding groove, a guide hole is formed in the sliding block, and the flapping piece comprises a linear motor and a flapping head arranged at the output end of the linear motor. According to the utility model, wearing is very convenient and fast, the overall structure is simple and small, carrying and household use are facilitated, and the output rod of the linear motor is