Method for electrochemically detecting analyte

A method for electrochemically detecting an analyte in an electrolytic solution comprising:

• bringing a sample containing an analyte into contact with a working electrode on which trapping substance for trapping the analyte is immobilized to allow the analyte to be trapped on the working electrode by the trapping substance;
• forming a complex containing the analyte trapped on the working electrode in the trapping process and a label binding substance in which a labeling substance is retained via a modulator which generates an interaction with an electrolytic solution and a working electrode site except a site where the trapping substance are bound on a binding substance which binds to the analyte on the working electrode;
• and
• electrochemically detecting the labeling substance present on the working electrode obtained in the complex formation process.