The feasibility for the quantum signals transmission in the atmospheric channels has been demonstrated in many experiments. The quantum communication terminals are added to mobile platforms, which is considered as one of the most significant practicable applications and can satisfy the requirements of the construction of global quantum secure networks, the strict security of military communications, and so on. The crucial technologies involved in the quantum key distributions between the ground and the mobile platforms are reviewed. The current status and challenges in the development of mobile quantum key distribution technique are introduced and the development direction for the practicable applications is also discussed.