Adding carbon nanotubes (CNTs) to polymers can turn them into conductive polymer composites (CPCs) and offer them piezoresistivity. The multifunctional behaviour of CPCs demonstrates a promising future in applications like sensors, smart textiles and more. Poly(lactic acid) or Polylactide (PLA) is one of the most promising thermoplastic polymers and is chosen as the matrix of CPC for this project, owing to its good mechanical properties, diversity of processing methods and biocompatibility. Although much work has been done in studying the piezoresistivity of CPCs, little research has explored the piezoresistive response of CPCs under complex strain fields. While the solution-mixing method can achieve good CNT dispersion at low concentrations, it often requires toxic organic solvents and is time-consuming. This project aims to find an improved method to fabricate PLA/CNT nanocomposites based on solvent-casting and study their strain-sensing abilities.