The utility model relates to the technical field of bee breeding, and particularly discloses a device for preventing wasps from entering a
beehive, which comprises a base, a
beehive, a
beehive entering and exiting regulation and control mechanism and two limiting components. The
honeycomb in-out regulation and control mechanism is arranged on the side face of the beehive and comprises a mounting frame, a longitudinal limiting piece, an adjusting
assembly (comprising an adjusting sliding way, a sliding rod, a linkage rod and a transverse rod), a
pulley and a sliding rail. The limiting
assembly is composed of an adjusting limiting bin, a limiting protruding belt, a locking block and a compression spring and connected with the adjusting
assembly to lock the size of the
nest opening. The linkage rod is driven to incline by pressing down the sliding rod, so that a
nest opening gap formed by the cross rod and the longitudinal rod in a staggered mode is reduced to 6-8 mm, and physical blocking is achieved through the
body type difference between bees with the chest width being about 5 mm and wasps with the chest width being 12-25 mm. Meanwhile, the size of the
nest opening can be rapidly changed by sliding the sliding rod in a reciprocating mode, bonded resin or
propolis is torn, and the cleaning efficiency is improved. The device has the advantages of dynamic adjustment, stable protection, convenient cleaning and the like, and is suitable for wasp intrusion protection in bee breeding.