To understand the mechanism of innovative work behaviour (IWB) in China's higher education. With a total of 495 valid responses from six universities in China, this study utilised Amos26 for data analysis. The structural equation model indicates that organisational politics (OP) significantly influences academics' knowledge sharing behaviour (KSB) (β = -0.220, p < 0.000) and IWB (β = -0.126, p < 0.005). The mediating effect of knowledge sharing is confirmed (β = -0.193, p < 0.003). This study confirms the detrimental effect of OP on KSB and IWB within Chinese high education institutions. Consequently, to foster innovation among academics, management should consider controlling OP within the organisational environment. Standardising the supervision and management of executive power, ensuring that administrative power operates transparently. Additionally, delineating between OP and non-OP behaviours will mitigate the negative impact of OP on innovation.