Small animal fixing device and small animal aerosol inhalation device

An aerosol inhalation device for small animals relates to the field of atomization devices and comprises an inner cylinder and an outer cylinder, the inner cylinder is provided with a longitudinal gap groove and an opening, the tail of the inner cylinder can pass through the longitudinal gap groove, the outer cylinder is provided with a locking mechanism, one end of the outer cylinder allows the inner cylinder to be sleeved in, the other end of the outer cylinder is conical and is provided with a circular opening, and the opening allows the mouth and the nose of the small animals to extend out; the liquid medicine atomization device comprises a connector capable of being fixedly connected with the small animal fixing device, a micropore piezoelectric type atomization piece, a liquid medicine pool, a circuit and a rechargeable battery, the piezoelectric type atomization piece and the circuit can adjust the atomization rate, the bottom end of the liquid medicine pool is connected with the atomization piece, and