The utility model provides a fuel tank and a vehicle, and relates to the technical field of vehicles. The utility model relates to a fuel tank which comprises a tank body provided with a connector used for discharging fuel steam in the tank body. The liquid level and ventilation control valve comprises a first valve body used for sensing the liquid level of fuel oil in the tank body and a first pipeline connected between the first valve body and the connector and used for conveying fuel oil steam, and the first valve body and the first pipeline are both arranged in the tank body so as to prevent the fuel oil steam in the tank body from leaking out of the tank body. The liquid level and ventilation control valve is arranged in the fuel tank, so that fuel vapor permeation points are reduced,the discharge amount of fuel vapor discharged to the atmosphere is reduced, and the vapor discharge value is reduced.