Ultrasonic clinical coupling agent smearing device

The invention belongs to the technical field of ultrasonic detection, and discloses an ultrasonic clinical coupling agent smearing device which comprises a storage box, corrugated plates are fixedly mounted on the left side and the right side of the storage box correspondingly, the outer sides of the corrugated plates are movably sleeved with protective sleeve plates, and first limiting assemblies are fixedly mounted on the inner sides of the protective sleeve plates; the top of the storage box is movably sleeved with a push rod, and first fixing blocks are fixedly installed on the left side and the right side of the lower end of the protective sleeve plate. Through cooperation of structures such as a first limiting assembly, a protective sleeve plate and a push rod, the bottom face of the protective sleeve plate is located below a smearing plate by moving the protective sleeve plate, and under limiting of a limiting block, a first sealing plate and a second sealing plate are moved to seal the bottom of the p