A full automatic cleaning machine for vacuum switch tubes is characterized by comprising a rack (1), a single-axis reciprocating machine (2), a fixed hanging rod (3), a transmission supporting mechanism and a circulatory spraying system. The transmission supporting mechanism comprises a driving roller (5), a set of driven rollers (6) and a motor. The circulatory spraying system comprises a waste water groove (7), an acid water groove (8), an alkali water groove (9), a high-pressure pump (10), an acid water pump (11), an alkali water pump (12), a pair of spraying nozzles (13), a multi-channel joint (14), an acid solenoid valve (15), an alkali solenoid valve (16), a pair of water outlet pipes (17), a pair of water outlet solenoid valves (18), a pair of stored water spraying pipes (19) and three switch mechanisms. The full automatic cleaning machine for the vacuum switch tubes has the advantages that the cleaning machine has the functions of water washing, acid washing and alkali washing, wherein the acid water and the alkali water can be recycled, so that the production cost is reduced; the cleaning machine can control the washing order and process of the water washing, the acid washing and the alkali washing by the solenoid valves, so that the cleaning requirements of the ceramic vacuum switch tubes in different production stages can be met and the degree of automation is high.