Methane (CH₄) and Carbon dioxide (CO₂) emission pathways in summer were quantified during a 48 hours online survey of a subtropical shallow pond in Yichang, China. We separated the diel bubble and diffusion gas fluxes measured by the DLT-100 Analyzer (Los Gatos Research, USA) thanks to its high sampling frequency. The total emission fluxes of CH₄ and CO₂ were 595.2 mg/(m²·d) and 1450.8 mg/(m²·d) respectively. Bubble emissions of CH₄ and CO₂ accounted for 99.7% of the total CH₄ emission and only 3.0% of the total CO₂ from the pond. Bubble emissions are highly time-variable in the observation period, with the biggest CH₄ bubbling rate of 424.28 mg/(m²·h), accounting for 35.75% of the two days’ total bubbling CH₄ emissions, but ebullition CH₄ flux was mainly located at <20 mg/(m²·h). The maximums of the diel diffusion CH₄ and CO₂ flux were 6.0 and 6.5 times of the responding minimums respectively.