The invention discloses a pneumatic pulse gas volume timing system. The system comprises a filter, an adjustable throttling valve, working gas volumes, a logic switch, a two-position three-way valve set, a non-adjustable throttling valve, a pulse gas volume and a fast discharge valve; one end of the filter is connected with a gas source, and the other end is connected with a five-way plug; other plugs of the five-way plug are connected with the input ends of the two-position three-way valve set; the output end of the two-position three-way valve set is connected with the input end of the adjustable throttling valve, the output end of the adjustable throttling valve is connected with the input end of the fast discharge valve, and the output end of the fast discharge valve is connected withthe input end of the pulse gas volume; and the pulse gas volume output end is connected with the working air volumes through the two-position three-way valve set and the non-adjustable throttling valve, and the working air volumes are connected with the logic switch. Compared with the prior art, the system has the advantages that the design is reasonable, and the time and the frequency of air volume inflation can be controlled through pulse signals, so that the timing accuracy is ensured.