The invention discloses a simple respirator convenient to carry and larger in air inlet amount. The respirator comprises a respiration bag connector, a spring compressor, an oral-nasal respiration mask and an air inlet regulator. A left compressed spring plate is arranged at the left end of the spring compressor, a right compressed spring plate is arranged at the right end of the spring compressor, the respiration bag connector is installed in the middle of the left side of the left compressed spring plate, and an oxygen pipe connector is arranged at the position, close to the left side of the left compressed spring plate, below the respiration bag connector. Compared with the prior art, the respirator has the advantages that the structure is scientific and reasonable, the novel simple respirator convenient to carry and larger in air inlet amount is simple in design, firm and durable, by means of a designed spring-shaped squeezer, more air can enter the respirator when medical staff use the respirator and squeeze the respirator once, the air inlet amount is larger than that of a traditional spherical respirator, the spring-shaped squeezer is convenient to carry and can be flattened and placed in a medical box when not used, and the occupied space is small.