The invention discloses a livestock and poultry manure solid-liquid separation and sewage treatment vehicle, which comprises a vehicle body, a fixed storage cavity is formed in the vehicle body, a liquid treatment cavity is formed in the lower end of the fixed storage cavity, a solid-liquid separator is arranged at the tail of the fixed storage cavity, and the interior of the liquid treatment cavity is divided into four treatment structures, one of the four treatment structures is a water purification structure, three fixing columns are arranged at the two ends of the inner wall of the water purification structure, pp cotton layers are connected to one ends of the three fixing columns in a clamped mode, and a z-shaped overlapped combination face is combined with an adjacent combination face. According to the livestock and poultry manure solid-liquid separation and sewage treatment vehicle, the filtering area can be increased, the filtering quality can be improved, sewage can be comprehensively covered, and the filtering effect can be greatly improved; the filtering quality and effect can be fully guaranteed, the overall filtering area can be increased, the filtering effect is improved, the overall contact area with water is further increased, and the overall precision of water filtering is high.