The invention discloses a method for producing a polymer membrane silver ion selective electrode. Crown ether compound which comprises amide groups and sulfur heteroatoms is used as silver ion carrier and is mixed with polyvinyl chloride, plasticizer and ion exchanging agent according to a certain proportion. Inorganic salt which comprises anions which can form slightly soluble matters with silver ions is used to adjust the concentration of interfering ions and main ions in internally filled liquid. The polymer membrane silver ion selective electrode membrane forming and activating conditions are optimized, the seepage of main irons of an inner membrane phase to sample solution is effectively reduced, and the polymer membrane silver ion selective electrode detection limit is made to comply with theoretical prediction value (less than 10-10mol/L). The polymer membrane silver ion selective electrode has good silver ion nernst response and silver ion selectivity. The method for producing the polymer membrane silver ion selective electrode overcomes the defect that the complexing agent used for the internally filled liquid of a polymer membrane electrode of low detection limit is easy to seep into a polymer membrane and the iron exchange resin is hard to miniaturize. The performance of the polymer membrane silver ion selective electrode can not be reduced in one month.
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