Graduated from Yongfu Junior Elementary School, Dacheng Junior High School, the music program of Tainan Girls Senior High School, National Institute of the Arts (now Taipei National University of the Arts), Wang had studied music with Prof. Rong-Yi Liu in her young years. Later she went to Germany and continued her studies on oboe playing in the Hochschule für Musik Detmold for her master’s degree with Prof. Gernot Schmalfuss; on chamber music, she studied with Prof. Gernot Schmalfuss, Hans-Dietrich Klaus, Helman Jung and Hans-Jörg Wegner.

During her stay in Germany, she was the oboe principal of the school orchestra and participated in the Detmold Chamber Orchestra (Detmolder Kammerorchester), touring around the country. She also co-founded the Trio d'Anche, which has been active and widely acclaimed ever since, performing all kinds of chamber music.

When she was still in the junior high school, she performed Mozart's Oboe Concerto in C Major with the Dacheng Junior High School Orchestra. In 1999, she held solo recitals respectively at the concert hall of the National University of Tainan, at the Fanghua Hall of the Tunghai University, and at the Kaohsiung Museum of Fine Arts. In 2006, she was invited to perform Mozart's Sinfonia Concertante in E-flat Major as the oboe soloist at the National Concert Hall with the Music Program of the Taipei Chung Cheng Senior High School. In 2008, she performed Deh-Ho Lai’s Sian Tzuei - for two Oboes and String Orchestra at the Concert Hall of the Taipei University of the Arts. In 2012, she performed the Cimarosa’s Oboe Concerto and Variations on a Theme of Glinka by Rimsky-Korsakov at Taipei Zhongshan Hall. In September 2012, she was invited by the Music Program of the New Taipei Municipal SanChong High School to perform Mozart's Sinfonia Concertante in E-flat Major again at the National Concert Hall. In 2014, I-ching has collaborated with Philippe Tondre to perform Oboe duets at the Eslite Recital Hall in April, in August, she performed the oboe concerto, El Bosque Mágico, by Spanish composer Ferrer Ferran with the Taipei Wind Orchestra & Symphonic Band at the National Concert Hall; in December the same year, she premiered Taiwanese composer Mei-Mi Lan’s oboe concerto, ”DEA” Concerto for Oboe and Wind Ensemble, at the concert hall of the Taipei National University of the Arts. In 2017, she performed Mozart's Sinfonia Concertante at the National Concert Hall with the National Symphony Orchestra in the New Year’s Concert. In May, she performed Óscar Navarro's Oboe Concerto Legacy with TNUA Chamber Orchestra at the concert hall of the Taipei National University of the Arts, with Taipei United Wind Orchestra at Taipei Zhongshan Hall in December and National Concert Hall in January 2018 respectively, and with the New Taipei Senior High School Orchestra at National Concert Hall in September 2018. In 2021, she was once again featured as the Oboe soloist in Mozart's Sinfonia Concertante at the National Concert Hall with the National Symphony Orchestra.

I-ching Wang holds positions of the Principal Oboe in both National Symphony Orchestra and Taipei Wind Orchestra & Symphonic Band.