Pneumatic controlled toilet with water tank hidden under toilet seat

The invention relates to the technical field of toilets, in particular to a pneumatic controlled toilet with a water tank hidden under a toilet seat. The pneumatic controlled toilet includes a toiletbody and the hidden water tank arranged at the tail of the toilet body; a water inlet valve, a pneumatic button and a drainage valve are arranged inside the hidden water tank, and an air discharge endof the pneumatic button communicates with the water inlet valve and the drainage valve respectively; and a water inlet is arranged at the bottom of the water inlet valve, a water flow channel is transversely arranged inside the water inlet valve, the position at a water outlet interface of the water inlet valve is provided with an air inlet, and the air inlet is provided with a positioning sleeve, a water stop pad and a water stop cover from inside to outside in sequence. According to the pneumatic controlled toilet, the dual-functional water inlet valve and the pneumatic large diameter drainage valve are utilized, th